Q1
BIOLOGY
Unit 10: Ecology and Environment
Gause’s principle of competitive exclusion states that
↻ Repeated question — also appeared in
2016 (2 sets)
- A. More abundant species will exclude the less abundant species through competition.
- B. Competition for the same resources excludes species having different food preferences.
- C. No two species can occupy the same niche indefinitely for the same limited resources.
- D. Larger organisms exclude smaller ones through competition.
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Q2
BIOLOGY
Unit 9: Biotechnology and Its Applications
The two polypeptides of human insulin are linked together by
↻ Repeated question — also appeared in
2016 (1 set)
- A. Hydrogen bonds
- B. Phosphodiester bond
- C. Covalent bond
- D. Disulphide bridges
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Q3
BIOLOGY
Unit 6: Reproduction
The coconut water from tender coconut represents
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Endocarp
- B. Fleshy mesocarp
- C. Free nuclear proembryo
- D. Free nuclear endosperm
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Q3
BIOLOGY
Unit 6: Reproduction
The coconut water from tender coconut represents
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Endocarp
- B. Fleshy mesocarp
- C. Free nuclear proembryo
- D. Free nuclear endosperm
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Q4
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements is wrong for viroids?
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2016 (2 sets)
- A. They lack a protein coat
- B. They are smaller than viruses
- C. They cause infections
- D. Their RNA is of high molecular weight
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Q5
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following features is not present in the Phylum - Arthropoda?
- A. Chitinous exoskeleton
- B. Metameric segmentation
- C. Parapodia
- D. Jointed appendages
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Q6
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following most appropriately describes haemophilia?
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2016 (2 sets)
- A. Recessive gene disorder
- B. X-linked recessive gene disorder
- C. Chromosomal disorder
- D. Dominant gene disorder
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Q7
BIOLOGY
Unit 4: Plant Physiology
Emerson's enhancement effect and Red drop has been instrumental in the discovery of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Photophosphorylation and non-cyclic electron transport
- B. Two photosystems operating simultaneously
- C. Photophosphorylation and cyclic electron transport
- D. Oxidative phosphorylation
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Q9
BIOLOGY
Unit 5: Human Physiology
Name the chronic respiratory disorder caused mainly by cigarette smoking
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2016 (3 sets)
- A. Emphysema
- B. Asthma
- C. Respiratory acidosis
- D. Respiratory alkalosis
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Q9
BIOLOGY
Unit 5: Human Physiology
Name the chronic respiratory disorder caused mainly by cigarette smoking.
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Emphysema
- B. Asthma
- C. Respiratory acidosis
- D. Respiratory alkalosis
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Q10
BIOLOGY
Unit 10: Ecology and Environment
A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called
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2016 (2 sets)
- A. Ley farming
- B. Contour farming
- C. Strip farming
- D. Shifting agriculture
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Q11
BIOLOGY
Unit 3: Cell Structure and Function
Mitochondria and chloroplast are: (a) semi-autonomous organelles; (b) formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery. Which one of the following options is correct?
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2016 (2 sets)
- A. Both (a) and (b) are correct
- B. (b) is true but (a) is false
- C. (a) is true but (b) is false
- D. Both (a) and (b) are false
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Q12
BIOLOGY
Unit 6: Reproduction
In the context of Amniocentesis, which of the following statements is incorrect?
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2016 (1 set)
- A. It is usually done when a woman is between 14-16 weeks pregnant.
- B. It is used for prenatal sex determination
- C. It can be used for detection of Down syndrome
- D. It can be used for detection of Cleft palate
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Q13
BIOLOGY
Unit 4: Plant Physiology
In a chloroplast the highest number of protons are found in
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2016 (2 sets)
- A. Stroma
- B. Lumen of thylakoids
- C. Inter membrane space
- D. Antennae complex
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Q14
BIOLOGY
Unit 5: Human Physiology
Photosensitive compound in human eye is made up of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Guanosine and Retinol
- B. Opsin and Retinal
- C. Opsin and Retinol
- D. Transducin and Retinene
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Q15
BIOLOGY
Unit 3: Cell Structure and Function
Spindle fibres attach on to
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2016 (3 sets)
- A. Telomere of the chromosome
- B. Kinetochore of the chromosome
- C. Centromere of the chromosome
- D. Kinetosome of the chromosome
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Q15
BIOLOGY
Unit 3: Cell Structure and Function
Spindle fibres attach on to
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Telomere of the chromosome
- B. Kinetochore of the chromosome
- C. Centromere of the chromosome
- D. Kinetosome of the chromosome
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Q16
BIOLOGY
Unit 1: Diversity in Living World
Which is the National Aquatic Animal of India?
- A. Gangetic shark
- B. River dolphin
- C. Blue whale
- D. Seahorse
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Q17
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following is required as inducer(s) for the expression of Lac operon?
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2016 (2 sets)
- A. Glucose
- B. Galactose
- C. Lactose
- D. Lactose and galactose
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Q18
BIOLOGY
Unit 5: Human Physiology
Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
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2016 (2 sets)
- A. Parathormone – Calcitonin
- B. Insulin – Glucagon
- C. Aldosterone – Atrial Natriuretic Factor
- D. Relaxin – Inhibin
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Q19
BIOLOGY
Unit 3: Cell Structure and Function
Microtubules are the constituents of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Cilia, Flagella and Peroxisomes
- B. Spindle fibres, Centrioles and Cilia
- C. Centrioles, Spindle fibres and Chromatin
- D. Centrosome, Nucleosome and Centrioles
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Q20
BIOLOGY
Unit 3: Cell Structure and Function
A complex of ribosomes attached to a single strand of RNA is known as
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Polysome
- B. Polymer
- C. Polypeptide
- D. Okazaki fragment
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Q21
BIOLOGY
Unit 6: Reproduction
Fertilization in humans is practically feasible only if
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2016 (2 sets)
- A. the sperms are transported into vagina just after the release of ovum in fallopian tube
- B. the ovum and sperms are transported simultaneously to ampullary isthmic junction of the fallopian tube
- C. the ovum and sperms are transported simultaneously to ampullary - isthmic junction of the cervix
- D. the sperms are transported into cervix within 48 hrs of release of ovum in uterus
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Q21
BIOLOGY
Unit 5: Human Physiology
Fertilization in humans is practically feasible only if
- A. the sperms are transported into vagina just after the release of ovum in fallopian tube
- B. the ovum and sperms are transported simultaneously to ampullary isthmic junction of the fallopian tube
- C. the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the cervix
- D. the sperms are transported into cervix within 48 hrs of release of ovum in uterus
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Q22
BIOLOGY
Unit 5: Human Physiology
Asthma may be attributed to
↻ Repeated question — also appeared in
2016 (2 sets)
- A. bacterial infection of the lungs
- B. allergic reaction of the mast cells in the lungs
- C. inflammation of the trachea
- D. accumulation of fluid in the lungs
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Q23
BIOLOGY
Unit 4: Plant Physiology
The Avena curvature is used for bioassay of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. ABA
- B. GA3
- C. IAA
- D. Ethylene
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Q24
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The standard petal of a papilionaceous corolla is also called
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Carina
- B. Pappus
- C. Vexillum
- D. Corona
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Q25
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Tricarpellary, syncarpous, gynoecium is found in flowers of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Liliaceae
- B. Solanaceae
- C. Fabaceae
- D. Poaceae
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Q26
BIOLOGY
Unit 1: Diversity in Living World
One of the major components of cell wall of most fungi is
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Chitin
- B. Peptidoglycan
- C. Cellulose
- D. Hemicellulose
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Q27
BIOLOGY
Unit 5: Human Physiology
Select the incorrect statement
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2016 (2 sets)
- A. FSH stimulates the sertoli cells which help in spermiogenesis
- B. LH triggers ovulation in ovary
- C. LH and FSH decrease gradually during the follicular phase
- D. LH triggers secretion of androgens from the Leydig cells
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Q27
BIOLOGY
Unit 5: Human Physiology
Select the incorrect statement:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. FSH stimulates the sertoli cells which help in spermiogenesis
- B. LH triggers ovulation in ovary
- C. LH and FSH decrease gradually during the follicular phase
- D. LH triggers secretion of androgens from the Leydig cells
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Q28
PHYSICS
Unit 3: Laws of Motion
What is the minimum velocity with which a body of mass m must enter a vertical loop of radius R so that it can complete the loop?
- A. sqrt(gR)
- B. sqrt(2gR)
- C. sqrt(3gR)
- D. sqrt(5gR)
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Q28
BIOLOGY
Unit 3: Cell Structure and Function
In meiosis crossing over is initiated at:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Pachytene
- B. Leptotene
- C. Zygotene
- D. Diplotene
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Q29
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminated with radiation of wavelength 2λ, the stopping potential is V/4. The threshold wavelength for the metallic surface is:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. 4λ
- B. 5λ
- C. 5/2λ
- D. 3λ
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Q29
BIOLOGY
Unit 7: Genetics and Evolution
A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed the resulting genotypes were in the ratio of:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. 1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf
- B. 1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf
- C. 3 : 1 :: Tall : Dwarf
- D. 3 : 1 :: Dwarf : Tall
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Q30
PHYSICS
Unit 8: Thermodynamics
A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Compressing the gas isothermally will require more work to be done.
- B. Compressing the gas through adiabatic process will require more work to be done.
- C. Compressing the gas isothermally or adiabatically will require the same amount of work.
- D. Which of the case (whether compression through isothermal or through adiabatic process) requires more work will depend upon the atomicity of the gas.
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Q30
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is the most important cause of animals and plants being driven to extinction?
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2016 (2 sets)
- A. Over – exploitation
- B. Alien species invasion
- C. Habitat loss and fragmentation
- D. Co-extinctions
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Q31
PHYSICS
Unit 12: Current Electricity
A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of emf’s is:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. 5 : 1
- B. 5 : 4
- C. 3 : 4
- D. 3 : 2
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Q31
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is a characteristic feature of the cropland ecosystem?
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2016 (2 sets)
- A. Absence of soil organisms
- B. Least genetic diversity
- C. Absence of weeds
- D. Ecological succession
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Q32
PHYSICS
Unit 16: Optics
An astronomical telescope has objective and eyepiece of focal lengths 40 cm and 4 cm respectively. To view an object 200 cm away from the objective, the lenses must be separated by a distance:
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2016 (2 sets)
- A. 37.3 cm
- B. 46.0 cm
- C. 50.0 cm
- D. 54.0 cm
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Q32
BIOLOGY
Unit 5: Human Physiology
Changes in GnRH pulse frequency in females is controlled by circulating levels of:
↻ Repeated question — also appeared in
2016 (1 set)
- A. estrogen and progesterone
- B. estrogen and inhibin
- C. progesterone only
- D. progesterone and inhibin
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Q33
PHYSICS
Unit 7: Properties of Solids and Liquids
Two non-mixing liquids of densities ρ and nρ (n > 1) are put in a container. The height of each liquid is h. A solid cylinder of length L and density d is put in this container. The cylinder floats with its axis vertical and length pL (p < 1) in the denser liquid. The density d is equal to:
↻ Repeated question — also appeared in
2016 (3 sets)
- A. {1 + (n + 1)p}ρ
- B. {2 + (n + 1)p}ρ
- C. {2 + (n - 1)p}ρ
- D. {1 + (n - 1)p}ρ
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Q33
PHYSICS
Unit 7: Properties of Solids and Liquids
Two non-mixing liquids of densities ρ and nρ (n > 1) are put in a container. The height of each liquid is h. A solid cylinder of length L and density d is put in this container. The cylinder floats with its axis vertical and length pL (p < 1) in the denser liquid. The density d is equal to:
↻ Repeated question — also appeared in
2016 (3 sets)
- A. {1 + (n + 1)p}ρ
- B. {2 + (n + 1)p}ρ
- C. {2 + (n − 1)p}ρ
- D. {1 + (n − 1)p}ρ
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Q33
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is not a feature of the plasmids?
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2016 (2 sets)
- A. Independent replication
- B. Circular structure
- C. Transferable
- D. Single - stranded
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Q33
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is not a feature of the plasmids?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Independent replication
- B. Circular structure
- C. Transferable
- D. Single - stranded
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Q34
PHYSICS
Unit 19: Electronic Devices
To get output 1 for the following circuit, the correct choice for the input is:
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2016 (1 set)
- A. A = 0, B = 1, C = 0
- B. A = 1, B = 0, C = 0
- C. A = 1, B = 1, C = 0
- D. A = 1, B = 0, C = 1
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Q34
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following features is not present in Periplaneta americana?
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2016 (1 set)
- A. Schizocoelom as body cavity
- B. Indeterminate and radial cleavage during embryonic development
- C. Exoskeleton composed of N-acetylglucosamine
- D. Metamerically segmented body
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Q35
PHYSICS
Unit 8: Thermodynamics
A piece of ice falls from a height h so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is: [Latent heat of ice is 3.4 × 10^5 J/kg and g = 10 N/kg]
↻ Repeated question — also appeared in
2016 (2 sets)
- A. 34 km
- B. 544 km
- C. 136 km
- D. 68 km
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Q35
BIOLOGY
Unit 5: Human Physiology
In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self-cells, then it leads to
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Allergic response
- B. Graft rejection
- C. Auto-immune disease
- D. Active immunity
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Q36
PHYSICS
Unit 6: Gravitation
The ratio of escape velocity at earth (υe) to the escape velocity at a planet (υp) whose radius and mean density are twice as that of earth is:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. 1 : 2
- B. 1 : 2√2
- C. 1 : 4
- D. 1 : √2
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Q36
BIOLOGY
Unit 7: Genetics and Evolution
Match the terms in Column-I with their description in Column-II and choose the correct option.
Column-I: (a) Dominance, (b) Codominance, (c) Pleiotropy, (d) Polygenic inheritance
Column-II: (i) Many genes govern a single character, (ii) In a heterozygous organism only one allele expresses itself, (iii) In a heterozygous organism both alleles express themselves fully, (iv) A single gene influences many characters.
↻ Repeated question — also appeared in
2016 (2 sets)
- A. (1) (ii) (ii) (i) (iii)
- B. (2) (ii) (ii) (iv) (iii)
- C. (3) (iv) (iii) (ii) (iv)
- D. (4) (iv) (iii) (i) (ii)
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Q37
PHYSICS
Unit 1: Physics and Measurement
If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is:
- A. 0°
- B. 90°
- C. 45°
- D. 180°
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Q37
BIOLOGY
Unit 10: Ecology and Environment
Joint Forest Management Concept was introduced in India during
↻ Repeated question — also appeared in
2016 (2 sets)
- A. 1960 s
- B. 1970 s
- C. 1980 s
- D. 1990 s
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Q38
PHYSICS
Unit 18: Atoms and Nuclei
Given the value of Rydberg constant is 10^7 m⁻¹, the wave number of the last line of the Balmer series in hydrogen spectrum will be:
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2016 (2 sets)
- A. 0.025 × 10^4 m⁻¹
- B. 0.5 × 10^7 m⁻¹
- C. 0.25 × 10^7 m⁻¹
- D. 2.5 × 10^7 m⁻¹
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Q38
BIOLOGY
Unit 7: Genetics and Evolution
Pick out the correct statements.
(a) Haemophilia is a sex-linked recessive disease
(b) Down's syndrome is due to aneuploidy
(c) Phenylketonuria is an autosomal recessive gene disorder.
(d) Sickle cell anaemia is a X-linked recessive gene disorder
↻ Repeated question — also appeared in
2016 (3 sets)
- A. (a) and (d) are correct
- B. (b) and (d) are correct
- C. (a), (c) and (d) are correct
- D. (a), (b) and (c) are correct
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Q38
BIOLOGY
Unit 7: Genetics and Evolution
Pick out the correct statements.
(a) Haemophilia is a sex-linked recessive disease
(b) Down's syndrome is due to aneuploidy
(c) Phenylketonuria is an autosomal recessive gene disorder.
(d) Sickle cell anaemia is a X-linked recessive gene disorder
↻ Repeated question — also appeared in
2016 (3 sets)
- A. (1) (a) and (d) are correct
- B. (2) (b) and (d) are correct
- C. (3) (a), (c) and (d) are correct
- D. (4) (a), (b) and (c) are correct
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Q39
PHYSICS
Unit 4: Work Energy and Power
A body of mass 1 kg begins to move under the action of a time dependent force F = (2t i + 3t² j) N. What power will be developed by the force at the time t?
- A. (2t² + 3t³) W
- B. (2t² + 4t⁴) W
- C. (2t³ + 3t⁴) W
- D. (2t³ + 3t⁵) W
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Q39
PHYSICS
Unit 4: Work Energy and Power
A body of mass 1 kg begins to move under the action of a time dependent force F = (2t i + 3t² j) N, where i and j are unit vectors along x and y axis. What power will be developed by the force at the time t?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. (2t² + 3t³) W
- B. (2t² + 4t⁴) W
- C. (2t³ + 3t⁴) W
- D. (2t³ + 3t⁵) W
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Q39
BIOLOGY
Unit 1: Diversity in Living World
Which one of the following statements is wrong?
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2016 (2 sets)
- A. (1) Cyanobacteria are also called blue-green algae
- B. (2) Golden algae are also called desmids
- C. (3) Eubacteria are also called false bacteria.
- D. (4) Phycomycetes are also called algal fungi
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Q40
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
An inductor 20 mH, a capacitor 50 μF and a resistor 40 Ω are connected in series across a source of emf V = 10 sin 340 t. The power loss in A.C. circuit is:
↻ Repeated question — also appeared in
2016 (2 sets)
- A. 0.51 W
- B. 0.67 W
- C. 0.76 W
- D. 0.89 W
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Q40
BIOLOGY
Unit 6: Reproduction
Proximal end of the filament of stamen is attached to the
- A. (1) Anther
- B. (2) Connective
- C. (3) Placenta
- D. (4) Thalamus or petal
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Q41
PHYSICS
Unit 2: Kinematics
If the velocity of a particle is v = At + Bt², where A and B are constants, then the distance travelled by it between 1s and 2s is:
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2016 (2 sets)
- A. 3/2 A + 7/3 B
- B. 3A + 7B
- C. 3/2 A + 7/3 B
- D. 2/3 A + 3/2 B
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Q41
BIOLOGY
Unit 5: Human Physiology
Which of the following approaches does not give the defined action of contraceptive?
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2016 (2 sets)
- A. (1) Barrier methods - Prevent fertilization
- B. (2) Intrauterine devices - Increase phagocytosis of sperms, suppress sperm motility and fertilizing capacity of sperms
- C. (3) Hormonal contraceptives - Prevent/retard entry of sperms, prevent ovulation and fertilization
- D. (4) Vasectomy - Prevents spermatogenesis
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Q42
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A long solenoid has 1000 turns. When a current of 4A flows through it the magnetic flux linked with each turn of the solenoid is 4 × 10⁻³ Wb. The self-inductance of the solenoid is:
↻ Repeated question — also appeared in
2016 (1 set)
- A. 4 H
- B. 3 H
- C. 2 H
- D. 1 H
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Q42
BIOLOGY
Unit 9: Biotechnology and Its Applications
The taq polymerase enzyme is obtained from
↻ Repeated question — also appeared in
2016 (2 sets)
- A. (1) Thermus aquaticus
- B. (2) Thiobacillus ferrooxidans
- C. (3) Bacillus subtilis
- D. (4) Pseudomonas putida
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Q43
PHYSICS
Unit 11: Electrostatics
A small signal voltage V(t) = V₀ sin ωt is applied across an ideal capacitor C:
- A. Current I(t) lags voltage V(t) by 90°
- B. Over a full cycle the capacitor C does not consume any energy from the voltage source
- C. Current I(t) is in phase with voltage V(t).
- D. Current I(t) leads voltage V(t) by 180°
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Q43
BIOLOGY
Unit 5: Human Physiology
Identify the correct statement on 'inhibin'.
↻ Repeated question — also appeared in
2016 (2 sets)
- A. (1) Inhibits the secretion of LH, FSH and Prolactin.
- B. (2) Is produced by granulosa cells in ovary and inhibits the secretion of FSH.
- C. (3) Is produced by granulosa cells in ovary and inhibits the secretion of LH.
- D. (4) Is produced by nurse cells in testes and inhibits the secretion of LH.
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Q44
PHYSICS
Unit 16: Optics
Match the corresponding entries of column 1 with column 2. [Where m is the magnification produced by the mirror]
↻ Repeated question — also appeared in
2016 (1 set)
- A. A → b and c; B→ b and c; C→ b and d; D→ a and d
- B. A → a and c; B→ a and d; D→ a and b; D→ c and d
- C. A → a and d; B→ b and c; C→ b and d; D→ b and c
- D. A → c and d; B→ b and d; C→ b and c; D→ a and d
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Q44
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which part of the tobacco plant is infected by Meloidogyne incognita?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. (1) Flower
- B. (2) Leaf
- C. (3) Stem
- D. (4) Root
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Q44
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which part of the tobacco plant is infected by Meloidogyne incognita?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Flower
- B. Leaf
- C. Stem
- D. Root
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Q45
PHYSICS
Unit 3: Laws of Motion
A car is negotiating a curved road of radius R. The road is banked at an angle θ. The coefficient of friction between the tyres of the car and the road is μs. The maximum safe velocity on this road is:
↻ Repeated question — also appeared in
2016 (3 sets)
- A. sqrt(gR * (μs + tanθ) / (1 - μs tanθ))
- B. sqrt(gR * (μs + tanθ) / (1 - μs tanθ))
- C. gR * (μs + tanθ) / (1 - μs tanθ)
- D. sqrt(gR * (tanθ - μs) / (1 + μs tanθ))
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Q45
PHYSICS
Unit 3: Laws of Motion
A car is negotiating a curved road of radius R. The road is banked at an angle θ. The coefficient of friction between the tyres of the car and the road is μs. The maximum safe velocity on this road is:
↻ Repeated question — also appeared in
2016 (3 sets)
- A. sqrt(gR(μs + tan θ) / (1 - μs tan θ))
- B. sqrt(gR(μs + tan θ) / (1 - μs tan θ))
- C. sqrt(gR(μs + tan θ) / (1 - μs tan θ))
- D. sqrt(gR(μs + tan θ) / (1 - μs tan θ))
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Q45
BIOLOGY
Unit 8: Biology and Human Welfare
Anti-venom injection contains preformed antibodies while polio drops that are administered into the body contain
↻ Repeated question — also appeared in
2016 (1 set)
- A. (1) Activated pathogens
- B. (2) Harvested antibodies
- C. (3) Gamma globulin
- D. (4) Attenuated pathogens
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Q45
BIOLOGY
Unit 5: Human Physiology
Anti-venom injection contains preformed antibodies while polio drops that are administered into the body contain
↻ Repeated question — also appeared in
2016 (1 set)
- A. Activated pathogens
- B. Harvested antibodies
- C. Gamma globulin
- D. Attenuated pathogens
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Q46
BIOLOGY
Unit 3: Cell Structure and Function
Which one of the following cell organelles is enclosed by a single membrane?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Mitochondria
- B. Chloroplasts
- C. Lysosomes
- D. Nuclei
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Q47
BIOLOGY
Unit 5: Human Physiology
Lack of relaxation between successive stimuli in sustained muscle contraction is known as
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Spasm
- B. Fatigue
- C. Tetanus
- D. Tonus
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Q48
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following is not a stem modification?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Pitcher of Nepenthes
- B. Thorns of citrus
- C. Tendrils of cucumber
- D. Flattened structures of Opuntia
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Q49
BIOLOGY
Unit 3: Cell Structure and Function
Water soluble pigments found in plant cell vacuoles are
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Xanthophylls
- B. Chlorophylls
- C. Carotenoids
- D. Anthocyanins
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Q50
BIOLOGY
Unit 1: Diversity in Living World
Select the correct statement.
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Gymnosperms are both homosporous and heterosporous
- B. Salvinia, Ginkgo and Pinus all are gymnosperms
- C. Sequoia is one of the tallest trees
- D. The leaves of gymnosperms are not well adapted to extremes of climate
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Q51
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following is not required for any of the techniques of DNA fingerprinting available at present?
↻ Repeated question — also appeared in
2016 (1 set)
- A. Polymerase chain reaction
- B. Zinc finger analysis
- C. Restriction enzymes
- D. DNA–DNA hybridization
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Q51
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is not required for any of the techniques of DNA fingerprinting available at present?
↻ Repeated question — also appeared in
2016 (1 set)
- A. Polymerase chain reaction
- B. Zinc finger analysis
- C. Restriction enzymes
- D. DNA–DNA hybridization
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Q52
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which type of tissue correctly matches with its location?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Smooth muscle - Wall of intestine
- B. Areolar tissue - Tendons
- C. Transitional epithelium - Tip of nose
- D. Cuboidal epithelium - Lining of stomach
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Q52
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which type of tissue correctly matches with its location?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Smooth muscle : Wall of intestine
- B. Areolar tissue : Tendons
- C. Transitional epithelium : Tip of nose
- D. Cuboidal epithelium : Lining of stomach
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Q53
BIOLOGY
Unit 4: Plant Physiology
A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. C3
- B. C4
- C. CAM
- D. Nitrogen fixer
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Q54
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following structures is homologous to the wing of a bird?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Dorsal fin of a Shark
- B. Wing of a Moth
- C. Hind limb of Rabbit
- D. Flipper of Whale
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Q55
BIOLOGY
Unit 1: Diversity in Living World
Which of the following characteristic features always holds true for the corresponding group of animals?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Cartilaginous endoskeleton - Chondrichthyes
- B. Viviparous - Mammalia
- C. Possess a mouth with an upper and a lower jaw - Chordata
- D. 3 - chambered heart with one incompletely divided ventricle - Reptilia
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Q56
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following statements is not true for cancer cells in relation to mutations?
- A. Mutations in proto-oncogenes accelerate the cell cycle.
- B. Mutations destroy telomerase inhibitors.
- C. Mutations inactivate the cell control.
- D. Mutations inhibit production of telomerase.
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Q57
BIOLOGY
Unit 5: Human Physiology
The amino acid Tryptophan is the precursor for the synthesis of
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Melatonin and Serotonin
- B. Thyroxine and Triiodothyronine
- C. Estrogen and Progesterone
- D. Cortisol and Cortisone
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Q57
BIOLOGY
Unit 5: Human Physiology
The amino acid Tryptophan is the precursor for the synthesis of
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Melatonin and Serotonin
- B. Thyroxine and Triiodothyronine
- C. Estrogen and Progesterone
- D. Cortisol and Cortisone
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Q58
BIOLOGY
Unit 7: Genetics and Evolution
Following are the two statements regarding the origin of life.
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements, which one of the following options is correct?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. (a) is correct but (b) is false.
- B. (b) is correct but (a) is false.
- C. Both (a) and (b) are correct.
- D. Both (a) and (b) are false.
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Q59
BIOLOGY
Unit 5: Human Physiology
Reduction in pH of blood will
↻ Repeated question — also appeared in
2016 (2 sets)
- A. reduce the rate of heartbeat.
- B. reduce the blood supply to the brain.
- C. decrease the affinity of haemoglobin with oxygen.
- D. release bicarbonate ions by the liver.
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Q60
BIOLOGY
Unit 7: Genetics and Evolution
Analogous structures are a result of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Divergent evolution
- B. Convergent evolution
- C. Shared ancestry
- D. Stabilizing selection
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Q61
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is a restriction endonuclease?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Hind II
- B. Protease
- C. DNase I
- D. RNase
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Q62
BIOLOGY
Unit 10: Ecology and Environment
The term ecosystem was coined by
↻ Repeated question — also appeared in
2016 (3 sets)
- A. E.P. Odum
- B. A.G. Tansley
- C. E. Haeckel
- D. E. Warming
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Q62
BIOLOGY
Unit 10: Ecology and Environment
The term ecosystem was coined by
↻ Repeated question — also appeared in
2016 (3 sets)
- A. E.P. Odum
- B. A.G. Tansley
- C. E. Haeckel
- D. E. Warming
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Q63
CHEMISTRY
Unit 19: Biomolecules
Which one of the following statements is wrong?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Sucrose is a disaccharide.
- B. Cellulose is a polysaccharide.
- C. Uracil is a pyrimidine.
- D. Glycine is a sulphur containing amino acid.
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Q63
CHEMISTRY
Unit 19: Biomolecules
Which one of the following statements is wrong?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Sucrose is a disaccharide.
- B. Cellulose is a polysaccharide.
- C. Uracil is a pyrimidine.
- D. Glycine is a sulphur containing amino acid.
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Q64
BIOLOGY
Unit 1: Diversity in Living World
In bryophytes and pteridophytes, transport of male gametes requires
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Wind
- B. Insects
- C. Birds
- D. Water
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Q65
BIOLOGY
Unit 10: Ecology and Environment
When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN (1–N/K):
↻ Repeated question — also appeared in
2016 (2 sets)
- A. when N/K is exactly one.
- B. when N nears the carrying capacity of the habitat.
- C. when N/K equals zero.
- D. when the death rate is greater than the birth rate.
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Q66
BIOLOGY
Unit 6: Reproduction
Which one of the following statements is not true?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Tapetum helps in the dehiscence of anther
- B. Exine of pollen grains is made up of sporopollenin
- C. Pollen grains of many species cause severe allergies
- D. Stored pollen in liquid nitrogen can be used in the crop breeding programmes
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Q67
BIOLOGY
Unit 10: Ecology and Environment
Which of the following would appear as the pioneer organisms on bare rocks?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Lichens
- B. Liverworts
- C. Mosses
- D. Green algae
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Q68
BIOLOGY
Unit 7: Genetics and Evolution
Which one of the following is the starter codon?
↻ Repeated question — also appeared in
2016 (1 set)
- A. AUG
- B. UGA
- C. UAA
- D. UAG
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Q69
BIOLOGY
Unit 1: Diversity in Living World
Which one of the following characteristics is not shared by birds and mammals?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Ossified endoskeleton
- B. Breathing using lungs
- C. Viviparity
- D. Warm blooded nature
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Q69
BIOLOGY
Unit 1: Diversity in Living World
Which one of the following characteristics is not shared by birds and mammals?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Ossified endoskeleton
- B. Breathing using lungs
- C. Viviparity
- D. Warm blooded nature
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Q70
BIOLOGY
Unit 1: Diversity in Living World
Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Biological names can be written in any language
- B. The first word in a biological name represents the genus name, and the second is a specific epithet
- C. The names are written in Latin and are italicised
- D. When written by hand, the names are to be underlined
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Q71
BIOLOGY
Unit 5: Human Physiology
Blood pressure in the pulmonary artery is
↻ Repeated question — also appeared in
2016 (2 sets)
- A. same as that in the aorta.
- B. more than that in the carotid.
- C. more than that in the pulmonary vein.
- D. less than that in the vena cavae.
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Q72
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Cotyledon of maize grain is called
↻ Repeated question — also appeared in
2016 (1 set)
- A. plumule
- B. coleorhiza
- C. coleoptile
- D. scutellum
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Q73
BIOLOGY
Unit 5: Human Physiology
In the stomach, gastric acid is secreted by the
↻ Repeated question — also appeared in
2016 (2 sets)
- A. gastrin secreting cells
- B. parietal cells
- C. peptic cells
- D. acidic cells
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Q74
BIOLOGY
Unit 10: Ecology and Environment
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Nitrous oxide
- B. Ozone
- C. Ammonia
- D. Methane
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Q75
BIOLOGY
Unit 1: Diversity in Living World
Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Monera
- B. Protista
- C. Fungi
- D. Animalia
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Q76
BIOLOGY
Unit 4: Plant Physiology
Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options.
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Both processes cannot happen simultaneously.
- B. Both processes can happen together because the diffusion coefficient of water and CO2 is different.
- C. The above processes happen only during night-time.
- D. One process occurs during daytime, and the other at night.
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Q77
BIOLOGY
Unit 5: Human Physiology
In mammals, which blood vessel would normally carry the largest amount of urea?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Renal Vein
- B. Dorsal Aorta
- C. Hepatic Vein
- D. Hepatic Portal Vein
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Q78
BIOLOGY
Unit 6: Reproduction
Seed formation without fertilization in flowering plants involves the process of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Sporulation
- B. Budding
- C. Somatic hybridization
- D. Apomixis
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Q79
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is wrongly matched in the given table?
↻ Repeated question — also appeared in
2016 (1 set)
- A. Trichoderma polysporum : Cyclosporine A : Immunosuppressive drug
- B. Monascus purpureus : Statins : Lowering of blood cholesterol
- C. Streptococcus : Streptokinase : Removal of clot from blood vessel
- D. Clostridium butylicum : Lipase : Removal of oil stains
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Q80
BIOLOGY
Unit 7: Genetics and Evolution
In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates.
↻ Repeated question — also appeared in
2016 (2 sets)
- A. The two genes are located on two different chromosomes.
- B. Chromosomes failed to separate during meiosis.
- C. The two genes are linked and present on the same chromosome.
- D. Both of the characters are controlled by more than one gene.
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Q81
BIOLOGY
Unit 10: Ecology and Environment
It is much easier for a small animal to run uphill than for a large animal, because
↻ Repeated question — also appeared in
2016 (1 set)
- A. It is easier to carry a small body weight.
- B. Smaller animals have a higher metabolic rate.
- C. Small animals have a lower O2 requirement.
- D. The efficiency of muscles in large animals is less than in small animals.
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Q82
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following is not a characteristic feature during mitosis in somatic cells?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Spindle fibres
- B. Disappearance of nucleolus
- C. Chromosome movement
- D. Synapsis
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Q83
BIOLOGY
Unit 6: Reproduction
Which of the following statements is not correct?
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
- B. Insects that consume pollen or nectar without bringing about pollination are called pollen/nectar robbers.
- C. Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
- D. Some reptiles have also been reported as pollinators in some plant species.
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Q84
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Specialised epidermal cells surrounding the guard cells are called
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Complementary cells
- B. Subsidiary cells
- C. Bulliform cells
- D. Lenticels
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Q85
BIOLOGY
Unit 5: Human Physiology
Which of the following guards the opening of the hepato-pancreatic duct into the duodenum?
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Semilunar valve
- B. Ileocaecal valve
- C. Pyloric sphincter
- D. Sphincter of Oddi
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Q86
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Stems modified into flat green organs performing the functions of leaves are known as
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Cladodes
- B. Phyllodes
- C. Phylloclades
- D. Scales
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Q86
BIOLOGY
Unit 1: Diversity in Living World
Stems modified into flat green organs performing the functions of leaves are known as
- A. Cladodes
- B. Phyllodes
- C. Phylloclades
- D. Scales
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Q87
BIOLOGY
Unit 1: Diversity in Living World
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Halophiles
- B. Thermoacidophiles
- C. Methanogens
- D. Eubacteria
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Q87
BIOLOGY
Unit 1: Diversity in Living World
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the
↻ Repeated question — also appeared in
2016 (3 sets)
- A. Halophiles
- B. Thermoacidophiles
- C. Methanogens
- D. Eubacteria
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Q88
BIOLOGY
Unit 10: Ecology and Environment
A river with an inflow of domestic sewage rich in organic waste may result in
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Drying of the river very soon due to algal bloom.
- B. Increased population of aquatic food web organisms.
- C. An increased production of fish due to biodegradable nutrients.
- D. Death of fish due to lack of oxygen.
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Q89
BIOLOGY
Unit 7: Genetics and Evolution
A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of cell plates and thus the cell contains a greater number of chromosomes as compared to other dividing cells. This would result in
- A. Aneuploidy
- B. Polyploidy
- C. Somaclonal variation
- D. Polyteny
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Q90
CHEMISTRY
Unit 19: Biomolecules
A typical fat molecule is made up of
↻ Repeated question — also appeared in
2016 (2 sets)
- A. Three glycerol molecules and one fatty acid molecule
- B. One glycerol and three fatty acid molecules
- C. One glycerol and one fatty acid molecule
- D. Three glycerol and three fatty acid molecules
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Q136
CHEMISTRY
Unit 10: p-Block Elements
Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?
- A. C + 2H2SO4 → CO2 + 2SO2 + 2H2O
- B. CaF2 + H2SO4 → CaSO4 + 2HF
- C. Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O
- D. 3S + 2H2SO4 → 3SO2 + 2H2O
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Q137
CHEMISTRY
Unit 12: Coordination Compounds
Which of the following pairs of d-orbitals will have electron density along the axes?
- A. dz^2, dx^2-y^2
- B. dxy, dx^2-y^2
- C. dxz, dz^2
- D. dxz, dyz
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Q138
CHEMISTRY
Unit 10: p-Block Elements
The correct geometry and hybridization for XeF4 are:
- A. Planar triangle, sp3d3
- B. Square planar, sp3d2
- C. Octahedral, sp3d2
- D. Trigonal bipyramidal, sp3d
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Q139
CHEMISTRY
Unit 10: p-Block Elements
Among the following which one is a wrong statement?
- A. SeF4 and CH4 have same shape
- B. I3+ has bent geometry
- C. PH5 and BiCl5 do not exist
- D. pπ-dπ bonds are present in SO2
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Q140
CHEMISTRY
Unit 12: Coordination Compounds
The correct increasing order of trans-effect of the following species is:
- A. Br- > CN- > NH3 > C6H5-
- B. CN- > Br- > C6H5- > NH3
- C. NH3 > CN- > Br- > C6H5-
- D. CN- > C6H5- > Br- > NH3
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Q141
CHEMISTRY
Unit 11: d- and f-Block Elements
Which one of the following statements related to lanthanons is incorrect?
- A. All the lanthanons are much more reactive than aluminium
- B. Ce(+4) solutions are widely used as oxidizing agent in volumetric analysis
- C. Europium shows +2 oxidation state.
- D. The basicity decreases as the ionic radius decreases from Pr to Lu.
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Q142
CHEMISTRY
Unit 12: Coordination Compounds
Jahn-Teller effect not observed in high spin complexes of:
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- A. d4
- B. d9
- C. d7
- D. d8
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Q143
CHEMISTRY
Unit 15: Hydrocarbons
Which of the following can be used as the halide component for Friedel-Crafts reaction?
- A. Chloroethene
- B. Isopropyl chloride
- C. Chlorobenzene
- D. Bromobenzene
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Q146
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
In pyrrole, the electron density is maximum on:
- A. 2 and 4
- B. 2 and 5
- C. 2 and 3
- D. 3 and 4
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Q148
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Which one of the following nitro-compounds does not react with nitrous acid?
- A. Primary (1°) nitro compound
- B. Secondary (2°) nitro compound
- C. Primary amine
- D. Secondary amine
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Q149
CHEMISTRY
Unit 19: Biomolecules
The central dogma of molecular genetics states that the genetic information flows from:
- A. DNA → RNA → Proteins
- B. DNA → RNA → Carbohydrates
- C. Amino acids → Proteins → DNA
- D. DNA → Carbohydrates → Proteins
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Q150
CHEMISTRY
Unit 19: Biomolecules
The correct corresponding order names of four aldoses with configuration given below respectively, is :
- A. L-erythrose, L-threose, D-erythrose, D-threose
- B. D-erythrose, D-threose, L-erythrose, L-threose
- C. L-erythrose, L-threose, L-erythrose, D-threose
- D. D-threose, D-erythrose, L-threose, L-erythrose
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Q152
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
A given nitrogen-containing aromatic compound A reacts with Sn/HCl, followed by HNO2 to give an unstable compound B. B, on treatment with phenol, forms a beautiful coloured compound C with the molecular formula C12H10N2O. The structure of compound A is :
- A. Structure 1
- B. Structure 2
- C. Structure 3
- D. Structure 4
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Q153
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
Consider the reaction CH3CH2CH2Br + NaCN → CH3CH2CH2CN + NaBr. This reaction will be the fastest in :
- A. N, N’-dimethylformamide (DMF)
- B. Water
- C. Ethanol
- D. Methanol
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Q155
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which among the given molecules can exhibit tautomerism ?
- A. Both I and II
- B. Both II and III
- C. III only
- D. Both I and III
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Q156
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
The correct order of strengths of the carboxylic acids is :
- A. III > II > I
- B. II > I > III
- C. I > II > III
- D. II > III > I
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Q157
CHEMISTRY
Unit 15: Hydrocarbons
The compound that will react most readily with gaseous bromine has the formula :
- A. C4H10
- B. C2H4
- C. C3H6
- D. C2H2
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Q158
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which one of the following compounds shows the presence of intramolecular hydrogen bond ?
- A. Cellulose
- B. Concentrated acetic acid
- C. H2O2
- D. HCN
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Q159
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The molar conductivity of a 0.5 mol/dm3 solution of AgNO3 with electrolytic conductivity of 5.76 × 10–3 S cm–1 at 298 K is :
- A. 0.086 S cm2/mol
- B. 28.8 S cm2/mol
- C. 2.88 S cm2/mol
- D. 11.52 S cm2/mol
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Q160
CHEMISTRY
Unit 8: Chemical Kinetics
The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the :
- A. Rate is independent of the surface coverage
- B. Rate of decomposition is very slow
- C. Rate is proportional to the surface coverage
- D. Rate is inversely proportional to the surface coverage
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Q160
PHYSICS
Unit 7: Properties of Solids and Liquids
The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the:
- A. Rate is independent of the surface coverage
- B. Rate of decomposition is very slow
- C. Rate is proportional to the surface coverage
- D. Rate is inversely proportional to the surface coverage
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Q161
PHYSICS
Unit 7: Properties of Solids and Liquids
The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As2S3 are given below: I. (NaCl) = 52, II. (BaCl2) = 0.69, III. (MgSO4) = 0.22. The correct order of their coagulating power is:
- A. III > II > I
- B. III > I > II
- C. I > II > III
- D. II > I > III
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Q162
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is:
- A. 220 minutes
- B. 330 minutes
- C. 55 minutes
- D. 110 minutes
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Q163
CHEMISTRY
Unit 2: Atomic Structure
How many electrons can fit in the orbital for which n = 3 and l = 1?
- A. 10
- B. 14
- C. 2
- D. 6
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Q164
CHEMISTRY
Unit 4: Chemical Thermodynamics
For a sample of perfect gas when its pressure is changed isothermally from pi to pf, the entropy change is given by:
- A. ΔS = nRT ln(pf/pi)
- B. ΔS = RT ln(pi/pf)
- C. ΔS = nR ln(pf/pi)
- D. ΔS = nR ln(pi/pf)
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Q165
CHEMISTRY
Unit 5: Solutions
The van’t Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is:
- A. 2
- B. 3
- D. 1
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Q166
CHEMISTRY
Unit 6: Equilibrium
The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N+H) in a 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 × 10–9) is:
- A. 0.77%
- B. 1.6%
- C. 0.0060%
- D. 0.013%
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Q167
PHYSICS
Unit 7: Properties of Solids and Liquids
In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion (Ca2+) and fluoride ion (F–) are:
↻ Repeated question — also appeared in
2016 (1 set)
- A. 8 and 4
- B. 4 and 8
- C. 4 and 2
- D. 6 and 6
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Q168
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
If the cell E° for a given reaction has a negative value, which of the following gives the correct relationships for the values of ΔG° and Keq?
↻ Repeated question — also appeared in
2016 (1 set)
- A. ΔG° < 0; Keq > 1
- B. ΔG° < 0; Keq < 1
- C. ΔG° > 0; Keq < 1
- D. ΔG° > 0; Keq > 1
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Q169
CHEMISTRY
Unit 5: Solutions
Which one of the following is incorrect for an ideal solution?
- A. ΔP = Pobserved - Pcalculated by Raoult’s law = 0
- B. ΔGmix = 0
- C. ΔHmix = 0
- D. ΔUmix = 0
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Q170
CHEMISTRY
Unit 6: Equilibrium
The solubility of AgCl(s) with solubility product 1.6 × 10^-10 in 0.1 M NaCl solution would be :
- A. 1.6 × 10^-11 M
- B. Zero
- C. 1.26 × 10^-5 M
- D. 1.6 × 10^-9 M
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Q171
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 weighs 10 g and 0.05 mole of X3Y2 weighs 9 g, the atomic weights of X and Y are :
- A. 20, 30
- B. 30, 20
- C. 40, 30
- D. 60, 40
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Q172
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds (charge on electron = 1.60 × 10^-19 C) is :
- A. 3.75 × 10^20
- B. 7.48 × 10^23
- C. 6 × 10^23
- D. 6 × 10^20
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Q173
CHEMISTRY
Unit 10: p-Block Elements
Boric acid is an acid because its molecule :
- A. Accepts OH- from water releasing proton
- B. Combines with proton from water molecule
- C. Contains replaceable H+ ion
- D. Gives up a proton
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Q174
CHEMISTRY
Unit 12: Coordination Compounds
AlF3 is soluble in HF only in presence of KF. It is due to the formation of :
- A. AlH3
- B. K[AlF3H]
- C. K3[AlF3H3]
- D. K3[AlF6]
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Q175
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because :
↻ Repeated question — also appeared in
2016 (1 set)
- A. Zinc has lower negative electrode potential than iron
- B. Zinc has higher negative electrode potential than iron
- C. Zinc is lighter than iron
- D. Zinc has lower melting point than iron
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Q176
PHYSICS
Unit 7: Properties of Solids and Liquids
The suspension of slaked lime in water is known as :
- A. Milk of lime
- B. Aqueous solution of slaked lime
- C. Limewater
- D. Quicklime
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Q176
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
The suspension of slaked lime in water is known as :
- A. Milk of lime
- B. Aqueous solution of slaked lime
- C. Limewater
- D. Quicklime
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Q177
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
The hybridizations of atomic orbital of nitrogen in NO2+, NO3- and NH4+ respectively are
- A. sp, sp2 and sp3
- B. sp2, sp and sp3
- C. sp, sp3 and sp2
- D. sp2, sp3 and sp
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Q178
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following fluoro-compounds is most likely to behave as a Lewis base ?
- A. CF4
- B. SiF4
- C. BF3
- D. PF3
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Q179
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following pairs of ions is isoelectronic and isostructural ?
- A. SO3(2-), CO3(2-)
- B. ClO3(-), SO3(2-)
- C. CO3(2-), NO3(-)
- D. ClO3(-), CO3(2-)
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Q180
BIOLOGY
Unit 1: Diversity in Living World
In context with beryllium, which one of the following statements is incorrect ?
- A. Its salts rarely hydrolyze
- B. Its hydride is electron-deficient and polymeric
- C. It is rendered passive by nitric acid
- D. It forms Be2C
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