Q1
BIOLOGY
Unit 9: Biotechnology and Its Applications
Identify the wrong statement with regard to Restriction Enzymes.
↻ Repeated question — also appeared in
2020 (7 sets)
- A. They cut the strand of DNA at palindromic sites.
- B. They are useful in genetic engineering.
- C. Sticky ends can be joined by using DNA ligases.
- D. Each restriction enzyme functions by inspecting the length of a DNA sequence.
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Q2
BIOLOGY
Unit 5: Human Physiology
Cuboidal epithelium with brush border of microvilli is found in:
↻ Repeated question — also appeared in
2020 (1 set)
- A. ducts of salivary glands
- B. proximal convoluted tubule of nephron
- C. eustachian tube
- D. lining of intestine
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Q3
BIOLOGY
Unit 4: Plant Physiology
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
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2020 (8 sets)
- A. Gibberellin
- B. Ethylene
- C. Abscisic acid
- D. Cytokinin
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Q4
BIOLOGY
Unit 9: Biotechnology and Its Applications
Match the following columns and select the correct option: (a) Bt cotton, (b) Adenosine deaminase deficiency, (c) RNAi, (d) PCR.
↻ Repeated question — also appeared in
2020 (3 sets)
- A. 1) (iii) (i) (iv) (ii) (Error in text mapping)
- B. 2) (ii) (iii) (iv) (i) (Error in text mapping)
- C. 3) (i) (ii) (iii) (iv) (Error in text mapping)
- D. 4) (iv) (i) (ii) (iii)
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Q5
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The ovary is half inferior in:
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2020 (7 sets)
- A. Mustard
- B. Sunflower
- C. Plum
- D. Brinjal
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Q6
CHEMISTRY
Unit 19: Biomolecules
Which one of the following is the most abundant protein in the animals?
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2020 (1 set)
- A. Collagen
- B. Lectin
- C. Insulin
- D. Haemoglobin
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Q7
BIOLOGY
Unit 7: Genetics and Evolution
If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 x 10^9 bp, then the length of the DNA is approximately:
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2020 (3 sets)
- A. 2.5 meters
- B. 2.2 meters
- C. 2.7 meters
- D. 2.0 meters
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Q8
BIOLOGY
Unit 7: Genetics and Evolution
The first phase of translation is:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Recognition of DNA molecule
- B. Aminoacylation of tRNA
- C. Recognition of an anti-codon
- D. Binding of mRNA to ribosome
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Q9
BIOLOGY
Unit 5: Human Physiology
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
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2020 (3 sets)
- A. High concentration of Progesterone
- B. Low concentration of LH
- C. Low concentration of FSH
- D. High concentration of Estrogen
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Q10
BIOLOGY
Unit 7: Genetics and Evolution
Flippers of Penguins and Dolphins are examples of:
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2020 (8 sets)
- A. Convergent evolution
- B. Industrial melanism
- C. Natural selection
- D. Adaptive radiation
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Q11
BIOLOGY
Unit 7: Genetics and Evolution
Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.
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2020 (7 sets)
- A. A person will have only two of the three alleles.
- B. When IA and IB are present together, they express same type of sugar.
- C. Allele 'i' does not produce any sugar.
- D. The gene (I) has three alleles.
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Q12
BIOLOGY
Unit 5: Human Physiology
Select the option including all sexually transmitted diseases.
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2020 (4 sets)
- A. Gonorrhoea, Malaria, Genital herpes
- B. AIDS, Malaria, Filaria
- C. Cancer, AIDS, Syphilis
- D. Gonorrhoea, Syphilis, Genital herpes
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Q13
BIOLOGY
Unit 4: Plant Physiology
In light reaction, plastoquinone facilitates the transfer of electrons from :
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2020 (8 sets)
- A. Cyt b6f complex to PS-I
- B. PS-I to NADP+
- C. PS-I to ATP synthase
- D. PS-II to Cyt b6f complex
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Q14
BIOLOGY
Unit 7: Genetics and Evolution
Embryological support for evolution was disapproved by:
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2020 (8 sets)
- A. Alfred Wallace
- B. Charles Darwin
- C. Oparin
- D. Karl Ernst von Baer
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Q15
BIOLOGY
Unit 1: Diversity in Living World
Bilaterally symmetrical and acoelomate animals are exemplified by:
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2020 (8 sets)
- A. Platyhelminthes
- B. Aschelminthes
- C. Annelida
- D. Ctenophora
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Q16
BIOLOGY
Unit 5: Human Physiology
Which of the following would help in prevention of diuresis?
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2020 (8 sets)
- A. Reabsorption of Na+ and water from renal tubules due to aldosterone
- B. Atrial natriuretic factor causes vasoconstriction
- C. Decrease in secretion of renin by JG cells
- D. More water reabsorption due to undersecretion of ADH
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Q17
BIOLOGY
Unit 8: Biology and Human Welfare
Match the following columns: (a) Clostridium butylicum, (b) Trichoderma polysporum, (c) Monascus purpureus, (d) Aspergillus niger. Matches: (i) Cyclosporin-A, (ii) Butyric Acid, (iii) Citric Acid, (iv) Blood cholesterol lowering agent.
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2020 (4 sets)
- A. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
- B. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
- C. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
- D. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
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Q18
BIOLOGY
Unit 3: Cell Structure and Function
Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of:
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2020 (7 sets)
- A. G1 phase
- B. S phase
- C. G2 phase
- D. M phase
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Q19
BIOLOGY
Unit 6: Reproduction
In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?
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2020 (8 sets)
- A. GIFT and ZIFT
- B. ICSI and ZIFT
- C. GIFT and ICSI
- D. ZIFT and IUT
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Q20
BIOLOGY
Unit 10: Ecology and Environment
Snow-blindness in Antarctic region is due to:
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2020 (6 sets)
- A. Inflammation of cornea due to high dose of UV-B radiation
- B. High reflection of light from snow
- C. Damage to retina caused by infra-red rays
- D. Freezing of fluids in the eye by low temperature
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Q21
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following statements is correct?
↻ Repeated question — also appeared in
2020 (4 sets)
- A. Adenine pairs with thymine through one H-bond.
- B. Adenine pairs with thymine through three H-bonds.
- C. Adenine does not pair with thymine.
- D. Adenine pairs with thymine through two H-bonds.
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Q22
BIOLOGY
Unit 4: Plant Physiology
Which of the following is not an inhibitory substance governing seed dormancy?
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2020 (8 sets)
- A. Abscisic acid
- B. Phenolic acid
- C. Para-ascorbic acid
- D. Gibberellic acid
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Q23
BIOLOGY
Unit 7: Genetics and Evolution
From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. CH3, H2, NH4 and water vapor at 800°C
- B. CH4, H2, NH3 and water vapor at 600°C
- C. CH3, H2, NH3 and water vapor at 600°C
- D. CH4, H2, NH3 and water vapor at 800°C
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Q24
BIOLOGY
Unit 7: Genetics and Evolution
Experimental verification of the chromosomal theory of inheritance was done by:
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2020 (9 sets)
- A. Sutton
- B. Boveri
- C. Morgan
- D. Mendel
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Q25
BIOLOGY
Unit 4: Plant Physiology
Match the following concerning essential elements and their functions in plants:
(a) Iron (i) Photolysis of water
(b) Zinc (ii) Pollen germination
(c) Boron (iii) Required for chlorophyll biosynthesis
(d) Manganese (iv) IAA biosynthesis
↻ Repeated question — also appeared in
2020 (5 sets)
- A. (1) (iv) (iii) (ii) (i)
- B. (2) (iii) (iv) (ii) (i)
- C. (3) (iv) (i) (ii) (iii)
- D. (4) (ii) (i) (iv) (iii)
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Q26
BIOLOGY
Unit 9: Biotechnology and Its Applications
The specific palindromic sequence which is recognized by EcoRI is:
↻ Repeated question — also appeared in
2020 (5 sets)
- A. 5' - GGAACC - 3' / 3'- CCTTGG-5'
- B. 5' - CTTAAG - 3' / 3' - GAATTC - 5'
- C. 5' - GGATCC - 3' / 3' - CCTAGG - 5'
- D. 5' - GAATTC - 3' / 3' - CTTAAG - 5'
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Q27
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The body of the ovule is fused within the funicle at:
↻ Repeated question — also appeared in
2020 (1 set)
- A. Micropyle
- B. Nucellus
- C. Chalaza
- D. Hilum
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Q28
BIOLOGY
Unit 5: Human Physiology
The process of growth is maximum during:
- A. Lag phase
- B. Senescence
- C. Dormancy
- D. Log phase
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Q29
BIOLOGY
Unit 3: Cell Structure and Function
Dissolution of the synaptonemal complex occurs during:
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2020 (3 sets)
- A. Zygotene
- B. Diplotene
- C. Leptotene
- D. Pachytene
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Q30
BIOLOGY
Unit 1: Diversity in Living World
Floridean starch has structure similar to:
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2020 (8 sets)
- A. Amylopectin and glycogen
- B. Mannitol and algin
- C. Laminarin and cellulose
- D. Starch and cellulose
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Q31
BIOLOGY
Unit 4: Plant Physiology
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is:
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2020 (8 sets)
- A. Root pressure
- B. Imbibition
- C. Plasmolysis
- D. Transpiration
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Q32
BIOLOGY
Unit 8: Biology and Human Welfare
Identify the wrong statement with reference to immunity.
↻ Repeated question — also appeared in
2020 (4 sets)
- A. When ready-made antibodies are directly given, it is called “Passive immunity”.
- B. Active immunity is quick and gives full response.
- C. Foetus receives some antibodies from mother, it is an example for passive immunity.
- D. When exposed to antigen (living or dead) antibodies are produced in the host’s body. It is called “Active immunity”.
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Q33
BIOLOGY
Unit 10: Ecology and Environment
In water hyacinth and water lily, pollination takes place by:
- A. water currents only
- B. wind and water
- C. insects and water
- D. insects or wind
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Q34
BIOLOGY
Unit 3: Cell Structure and Function
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?
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2020 (8 sets)
- A. Peroxisomes
- B. Golgi bodies
- C. Polysomes
- D. Endoplasmic reticulum
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Q35
BIOLOGY
Unit 10: Ecology and Environment
Which of the following regions of the globe exhibits highest species diversity?
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2020 (8 sets)
- A. Madagascar
- B. Himalayas
- C. Amazon forests
- D. Western Ghats of India
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Q36
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Goblet cells of alimentary canal are modified from:
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2020 (7 sets)
- A. Columnar epithelial cells
- B. Chondrocytes
- C. Compound epithelial cells
- D. Squamous epithelial cells
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Q37
BIOLOGY
Unit 1: Diversity in Living World
Which of the following is correct about viroids?
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2020 (5 sets)
- A. They have free RNA without protein coat.
- B. They have DNA with protein coat.
- C. They have free DNA without protein coat.
- D. They have RNA with protein coat.
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Q38
BIOLOGY
Unit 8: Biology and Human Welfare
Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:
↻ Repeated question — also appeared in
2020 (1 set)
- A. Growth response
- B. Defence action
- C. Effect on reproduction
- D. Nutritive value
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Q39
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is put into Anaerobic sludge digester for further sewage treatment?
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2020 (2 sets)
- A. Floating debris
- B. Effluents of primary treatment
- C. Activated sludge
- D. Primary sludge
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Q40
BIOLOGY
Unit 9: Biotechnology and Its Applications
In gel electrophoresis, separated DNA fragments can be visualized with the help of:
↻ Repeated question — also appeared in
2020 (5 sets)
- A. Ethidium bromide in UV radiation
- B. Acetocarmine in UV radiation
- C. Ethidium bromide in infrared radiation
- D. Acetocarmine in bright blue light
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Q41
BIOLOGY
Unit 9: Biotechnology and Its Applications
The sequence that controls the copy number of the linked DNA in the vector, is termed:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Ori site
- B. Palindromic sequence
- C. Recognition site
- D. Selectable marker
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Q42
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The roots that originate from the base of the stem are:
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2020 (5 sets)
- A. Primary roots
- B. Prop roots
- C. Lateral roots
- D. Fibrous roots
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Q43
CHEMISTRY
Unit 11: d- and f-Block Elements
The calculated spin only magnetic moment of Cr 2+ ion is:
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2020 (9 sets)
- A. 4.90 BM
- B. 5.92 BM
- C. 2.84 BM
- D. 3.87 BM
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Q44
CHEMISTRY
Unit 5: Solutions
The mixture which shows positive deviation from Raoult’s law is:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Benzene + Toluene
- B. Acetone + Chloroform
- C. Chloroethane + Bromoethane
- D. Ethanol + Acetone
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Q45
BIOLOGY
Unit 5: Human Physiology
Which of the following is a basic amino acid?
- A. Alanine
- B. Tyrosine
- C. Lysine
- D. Serine
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Q46
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
What is the change in oxidation number of carbon in the following reaction? CH4(g) + 4Cl2(g) -> CCl4(l) + 4HCl(g)
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2020 (7 sets)
- A. 0 to +4
- B. -4 to +4
- C. 0 to -4
- D. +4 to +4
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Q47
CHEMISTRY
Unit 19: Biomolecules
Sucrose on hydrolysis gives:
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2020 (7 sets)
- A. alpha-D-Glucose + beta-D-Glucose
- B. alpha-D-Glucose + beta-D-Fructose
- C. alpha-D-Fructose + beta-D-Fructose
- D. beta-D-Glucose + alpha-D-Fructose
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Q48
PHYSICS
Unit 10: Oscillations and Waves
An increase in the concentration of the reactants of a reaction leads to change in:
- A. heat of reaction
- B. threshold energy
- C. collision frequency
- D. activation energy
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Q49
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?
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2020 (8 sets)
- A. +R effect of -CH3 groups
- B. -R effect of -CH3 groups
- C. Hyperconjugation
- D. -I effect of -CH3 groups
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Q50
CHEMISTRY
Unit 6: Equilibrium
Find out the solubility of Ni(OH)2 in 0.1M NaOH. Given that the ionic product of Ni(OH)2 is 2x10^-15.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 2x10^-8 M
- B. 1x10^-13 M
- C. 1x10^-8 M
- D. 2x10^-13 M
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Q51
CHEMISTRY
Unit 2: Atomic Structure
Identify a molecule which does not exist.
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2020 (3 sets)
- A. H2
- B. C2
- C. O2
- D. He2
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Q52
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Identify the incorrect statement.
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Sapwood is involved in conduction of water and minerals from root to leaf.
- B. Sapwood is the innermost secondary xylem and is lighter in colour.
- C. Due to deposition of tannins, resins, oils etc., heart wood is dark in colour.
- D. Heart wood does not conduct water but gives mechanical support.
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Q53
BIOLOGY
Unit 9: Biotechnology and Its Applications
Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to :
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Fungal diseases
- B. Plant nematodes
- C. Insect predators
- D. Insect pests
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Q54
BIOLOGY
Unit 1: Diversity in Living World
Which of the following pairs is of unicellular algae?
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2020 (8 sets)
- A. Gelidium and Gracilaria
- B. Anabaena and Volvox
- C. Chlorella and Spirulina
- D. Laminaria and Sargassum
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Q55
BIOLOGY
Unit 1: Diversity in Living World
Strobili or cones are found in:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Pteris
- B. Marchantia
- C. Equisetum
- D. Salvinia
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Q56
BIOLOGY
Unit 7: Genetics and Evolution
Name the enzyme that facilitates opening of DNA helix during transcription.
↻ Repeated question — also appeared in
2020 (6 sets)
- A. DNA helicase
- B. DNA polymerase
- C. RNA polymerase
- D. DNA ligase
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Q57
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The transverse section of a plant shows the following anatomical features: Large number of scattered vascular bundles surrounded by bundle sheath. Large conspicuous parenchymatous ground tissue. Vascular bundles conjoint and closed. Phloem parenchyma absent. Identify the category of plant and its part.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Monocotyledonous root
- B. Dicotyledonous stem
- C. Dicotyledonous root
- D. Monocotyledonous stem
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Q58
BIOLOGY
Unit 5: Human Physiology
Select the correct statement.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Glucagon is associated with hypoglycemia.
- B. Insulin acts on pancreatic cells and adipocytes.
- C. Insulin is associated with hyperglycemia.
- D. Glucocorticoids stimulate gluconeogenesis.
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Q59
BIOLOGY
Unit 10: Ecology and Environment
Montreal protocol was signed in 1987 for control of:
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2020 (8 sets)
- A. Emission of ozone depleting substances
- B. Release of Green House gases
- C. Disposal of e-wastes
- D. Transport of Genetically modified organisms from one country to another
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Q60
BIOLOGY
Unit 1: Diversity in Living World
Match the following columns and select the correct option.
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2020 (1 set)
- A. Column I: (a) 6-15 pairs of gill slits, (b) Heterocercal caudal fin, (c) Air Bladder, (d) Poison sting; Column II: (i) Trygon, (ii) Cyclostomes, (iii) Chondrichthyes, (iv) Osteichthyes. Match: (1) (iii)(iv)(i)(ii) (2) (iv)(ii)(iii)(i) (3) (i)(iv)(iii)(ii) (4) (ii)(iii)(iv)(i)
- B. Option 1
- C. Option 2
- D. Option 4
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Q1
PHYSICS
Unit 7: Properties of Solids and Liquids
A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to L_1 when mass M is suspended from its free end. The expression for Young's modulus is:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Mg(L_1-L) / AL
- B. MgL / A(L_1-L)
- C. MgL_1 / AL
- D. MgL / AL_1
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Q2
PHYSICS
Unit 9: Kinetic Theory of Gases
A cylinder contains hydrogen gas at a pressure of 249 kPa and temperature 27°C. Its density is: (R=8.3 J mol⁻¹ K⁻¹)
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2020 (7 sets)
- A. 0.2 kg/m³
- B. 0.1 kg/m³
- C. 0.02 kg/m³
- D. 0.5 kg/m³
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Q5
PHYSICS
Unit 9: Kinetic Theory of Gases
The mean free path for a gas, with molecular diameter d and number density n can be expressed as:
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2020 (8 sets)
- A. 1 / (√2 nπd²)
- B. 1 / (√2 n²πd²)
- C. 1 / (√2 n²π²d²)
- D. 1 / (√2 nπd)
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Q6
PHYSICS
Unit 2: Kinematics
A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is: (g= 10 m/s²)
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2020 (8 sets)
- A. 340 m
- B. 320 m
- C. 300 m
- D. 360 m
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Q7
PHYSICS
Unit 4: Work Energy and Power
Light with an average flux of 20 W/cm² falls on a non-reflecting surface at normal incidence having surface area 20 cm². The energy received by the surface during a time span of 1 minute is:
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2020 (2 sets)
- A. 12 x 10³ J
- B. 24 x 10³ J
- C. 48 x 10³ J
- D. 10 x 10³ J
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Q8
PHYSICS
Unit 18: Atoms and Nuclei
When a uranium isotope 235U is bombarded with a neutron, it generates 92Kr, three neutrons and:
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2020 (7 sets)
- A. 141Ba
- B. 142Zr
- C. 141Kr
- D. 142Kr
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Q9
PHYSICS
Unit 11: Electrostatics
A spherical conductor of radius 10 cm has a charge of 3.2 x 10⁻⁷ C distributed uniformly. What is the magnitude of the electric field at a point 15 cm from the centre of the sphere? (1/4πε₀ = 9 x 10⁹ N m²/C²)
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2020 (8 sets)
- A. 1.28 x 10⁵ N/C
- B. 1.28 x 10⁶ N/C
- C. 1.28 x 10⁷ N/C
- D. 1.28 x 10⁴ N/C
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Q10
PHYSICS
Unit 16: Optics
A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is μ, then the angle of incidence is nearly equal to:
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2020 (8 sets)
- A. 2A
- B. μA
- C. A/2μ
- D. 2μA
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Q11
PHYSICS
Unit 8: Thermodynamics
Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is:
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2020 (8 sets)
- A. adiabatic
- B. isochoric
- C. isobaric
- D. isothermal
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Q12
PHYSICS
Unit 12: Current Electricity
A 40 μF capacitor is connected to a 200 V, 50 Hz ac supply. The rms value of the current in the circuit is, nearly:
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2020 (1 set)
- A. 2.05 A
- B. 2.5 A
- C. 25.1 A
- D. 1.7 A
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Q14
PHYSICS
Unit 15: Electromagnetic Waves
The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is:
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2020 (8 sets)
- A. 1:1
- B. 1:c
- C. 1:c^2
- D. c:1
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Q15
PHYSICS
Unit 5: Rotational Motion
Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass. The centre of mass of the system from the 5 kg particle is nearly at a distance of:
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2020 (7 sets)
- A. 50 cm
- B. 67 cm
- C. 80 cm
- D. 33 cm
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Q16
PHYSICS
Unit 20: Experimental Skills
A resistance wire connected in the left gap of a metre bridge balances a 10 Ω resistance in the right gap at a point which divides the bridge wire in the ratio 3 : 2. If the length of the resistance wire is 1.5 m, then the length of 1 Ω of the resistance wire is:
↻ Repeated question — also appeared in
2020 (1 set)
- A. 1.0 x 10^-1 m
- B. 1.5 x 10^-1 m
- C. 1.5 x 10^-2 m
- D. 1.0 x 10^-2 m
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Q17
PHYSICS
Unit 16: Optics
In Young’s double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes:
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2020 (8 sets)
- A. half
- B. four times
- C. one-fourth
- D. double
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Q18
PHYSICS
Unit 19: Electronic Devices
The solids which have the negative temperature coefficient of resistance are:
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2020 (5 sets)
- A. insulators only
- B. semiconductors only
- C. insulators and semiconductors
- D. metals
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Q27
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is π/3. If instead C is removed from the circuit, the phase difference is again π/3 between current and voltage. The power factor of the circuit is:
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2020 (8 sets)
- A. 0.5
- B. 1.0
- C. -1.0
- D. zero
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Q28
PHYSICS
Unit 7: Properties of Solids and Liquids
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in water. The mass of water that will rise in this tube is:
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2020 (8 sets)
- A. 5.0 g
- B. 10.0 g
- C. 20.0 g
- D. 2.5 g
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Q30
PHYSICS
Unit 19: Electronic Devices
For the logic circuit shown, the truth table is:
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2020 (5 sets)
- A. A 0 0 1 1; B 0 1 0 1; Y 1 1 1 0
- B. A 0 0 1 1; B 0 1 0 1; Y 0 1 1 1
- C. A 0 0 1 1; B 0 1 0 1; Y 1 0 0 0
- D. A 0 0 1 1; B 0 1 0 1; Y 0 0 0 1
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Q33
PHYSICS
Unit 11: Electrostatics
A short electric dipole has a dipole moment of 16 × 10⁻⁹ C m. The electric potential due to the dipole at a point at a distance of 0.6 m from the centre of the dipole, situated on a line making an angle of 60° with the dipole axis is:
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2020 (8 sets)
- A. 200 V
- B. 400 V
- C. zero
- D. 50 V
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Q34
PHYSICS
Unit 6: Gravitation
A body weighs 72 N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?
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2020 (8 sets)
- A. 32 N
- B. 30 N
- C. 24 N
- D. 48 N
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Q37
PHYSICS
Unit 9: Kinetic Theory of Gases
The average thermal energy for a mono-atomic gas is:
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2020 (1 set)
- A. 3/2 kBT
- B. 5/2 kBT
- C. kBT
- D. 7/2 kBT
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Q40
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magnetic field at the centre of the solenoid is (μ₀ = 4π x 10⁻⁷ T m A⁻¹):
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 3.14 x 10⁻⁴ T
- B. 6.28 x 10⁻⁵ T
- C. 3.14 x 10⁻⁵ T
- D. 6.28 x 10⁻⁴ T
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Q41
PHYSICS
Unit 16: Optics
The Brewster's angle i_b for an interface should be:
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2020 (8 sets)
- A. 30° < i_b < 45°
- B. 45° < i_b < 90°
- C. i_b = 90°
- D. 0° < i_b < 30°
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Q42
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is 1.227 × 10⁻² nm, the potential difference is:
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2020 (9 sets)
- A. 10² V
- B. 10³ V
- C. 10⁴ V
- D. 10 V
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Q43
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Taking into account the significant figures, what is the value of 9.99 m - 0.0099 m ?
- A. 9.98 m
- B. 9.980 m
- C. 9.9 m
- D. 9.9801 m
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Q44
PHYSICS
Unit 20: Experimental Skills
A screw gauge has a least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is:
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2020 (6 sets)
- A. 0.25 mm
- B. 0.5 mm
- C. 1.0 mm
- D. 0.01 mm
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Q45
PHYSICS
Unit 10: Oscillations and Waves
The phase difference between displacement and acceleration of a particle in a simple harmonic motion is:
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2020 (8 sets)
- A. π/2 rad
- B. π rad
- C. zero
- D. 2π rad
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Q57
BIOLOGY
Unit 5: Human Physiology
Identify the wrong statement with reference to transport of oxygen.
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2020 (8 sets)
- A. Partial pressure of CO2 can interfere with O2 binding with haemoglobin.
- B. Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin.
- C. Low pCO2 in alveoli favours the formation of oxyhaemoglobin.
- D. Binding of oxygen with haemoglobin is mainly related to partial pressure of O2.
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Q58
BIOLOGY
Unit 3: Cell Structure and Function
Identify the correct statement with regard to G1 phase (Gap 1) of interphase.
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2020 (7 sets)
- A. Reorganisation of all cell components takes place.
- B. Cell is metabolically active, grows but does not replicate its DNA.
- C. Nuclear Division takes place.
- D. DNA synthesis or replication takes place.
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Q59
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following statements about inclusion bodies is incorrect?
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2020 (8 sets)
- A. These are involved in ingestion of food particles.
- B. They lie free in the cytoplasm.
- C. These represent reserve material in cytoplasm.
- D. They are not bound by any membrane.
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Q60
BIOLOGY
Unit 5: Human Physiology
Match the following diseases with the causative organism and select the correct option.
Column-I (Disease) Column-II (Organism)
(a) Typhoid (i) Wuchereria
(b) Pneumonia (ii) Plasmodium
(c) Filariasis (iii) Salmonella
(d) Malaria (iv) Haemophilus
- A. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
- B. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
- C. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
- D. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
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Q61
BIOLOGY
Unit 6: Reproduction
Meiotic division of the secondary oocyte is completed:
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2020 (8 sets)
- A. At the time of copulation
- B. After zygote formation
- C. At the time of fusion of a sperm with an ovum
- D. Prior to ovulation
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Q66
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is not an attribute of a population?
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2020 (8 sets)
- A. Natality
- B. Mortality
- C. Species interaction
- D. Sex ratio
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Q76
BIOLOGY
Unit 3: Cell Structure and Function
Match the following with respect to meiosis: (a) Zygotene, (b) Pachytene, (c) Diplotene, (d) Diakinesis with (i) Terminalization, (ii) Chiasmata, (iii) Crossing over, (iv) Synapsis.
↻ Repeated question — also appeared in
2020 (1 set)
- A. 1) (iv) (iii) (ii) (i)
- B. 2) (i) (ii) (iv) (iii)
- C. 3) (ii) (iv) (iii) (i)
- D. 4) (iii) (iv) (i) (ii)
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Q88
BIOLOGY
Unit 5: Human Physiology
Match the following columns and select the correct option.
Column - I (Cells) | Column - II (Function)
(a) Eosinophils | (i) Immune response
(b) Basophils | (ii) Phagocytosis
(c) Neutrophils | (iii) Release histaminase, destructive enzymes
(d) Lymphocytes | (iv) Release granules containing histamine
↻ Repeated question — also appeared in
2020 (3 sets)
- A. (1) (iv) (i) (ii) (iii)
- B. (2) (i) (ii) (iv) (iii)
- C. (3) (ii) (iii) (i) (iv)
- D. (4) (iii) (iv) (ii) (i)
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Q89
BIOLOGY
Unit 10: Ecology and Environment
Match the trophic levels with their correct species examples in a grassland ecosystem.
(a) Fourth trophic level | (i) Crow
(b) Second trophic level | (ii) Vulture
(c) First trophic level | (iii) Rabbit
(d) Third trophic level | (iv) Grass
↻ Repeated question — also appeared in
2020 (4 sets)
- A. (a)(b)(c)(d) -> (iii)(ii)(i)(iv)
- B. (a)(b)(c)(d) -> (iv)(iii)(ii)(i)
- C. (a)(b)(c)(d) -> (i)(ii)(iii)(iv)
- D. (a)(b)(c)(d) -> (ii)(iii)(iv)(i)
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Q111
CHEMISTRY
Unit 19: Biomolecules
Identify the substances having glycosidic bond and peptide bond, respectively in their structure:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Glycerol, trypsin
- B. Cellulose, lecithin
- C. Inulin, insulin
- D. Chitin, cholesterol
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Q122
BIOLOGY
Unit 6: Reproduction
Match the following columns and select the correct option.
Column I: (a) Placenta, (b) Zona pellucida, (c) Bulbo-urethral glands, (d) Leydig cells
Column II: (i) Androgens, (ii) Human Chorionic Gonadotropin (hCG), (iii) Layer of the ovum, (iv) Lubrication of the Penis
↻ Repeated question — also appeared in
2020 (3 sets)
- A. (1) (i) (iv) (ii) (iii)
- B. (2) (iii) (ii) (iv) (i)
- C. (3) (ii) (iii) (iv) (i)
- D. (4) (iv) (iii) (i) (ii)
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Q125
BIOLOGY
Unit 5: Human Physiology
The enzyme enterokinase helps in conversion of:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. trypsinogen into trypsin
- B. caseinogen into casein
- C. pepsinogen into pepsin
- D. protein into polypeptides
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Q126
BIOLOGY
Unit 1: Diversity in Living World
Match the following columns and select the correct option.
Column I: (a) Gregarious, polyphagous pest, (b) Adult with radial symmetry and larva with bilateral symmetry, (c) Book lungs, (d) Bioluminescence
Column II: (i) Asterias, (ii) Scorpion, (iii) Ctenoplana, (iv) Locusta
↻ Repeated question — also appeared in
2020 (2 sets)
- A. (iv) (i) (ii) (iii)
- B. (iii) (ii) (i) (iv)
- C. (ii) (i) (iii) (iv)
- D. (i) (iii) (ii) (iv)
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Q127
BIOLOGY
Unit 5: Human Physiology
Presence of which of the following conditions in urine are indicative of Diabetes Mellitus?
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2020 (8 sets)
- A. Uremia and Renal Calculi
- B. Ketonuria and Glycosuria
- C. Renal calculi and Hyperglycaemia
- D. Uremia and Ketonuria
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Q128
BIOLOGY
Unit 5: Human Physiology
Identify the basic amino acid from the following.
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- A. Glutamic Acid
- B. Lysine
- C. Valine
- D. Tyrosine
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Q157
BIOLOGY
Unit 5: Human Physiology
Measuring Zeta potential is useful in determining which property of colloidal solution?
- A. Solubility
- B. Stability of the colloidal particles
- C. Size of the colloidal particles
- D. Viscosity
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Q158
CHEMISTRY
Unit 2: Atomic Structure
The number of protons, neutrons and electrons in Lu (Lutetium), respectively, are:
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- A. 104, 71 and 71
- B. 71, 71 and 104
- C. 175, 104 and 71
- D. 71, 104 and 71
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Q160
BIOLOGY
Unit 3: Cell Structure and Function
The number of protons, neutrons and electrons in Lu, respectively, are:
- A. 104, 71 and 71
- B. 71, 71 and 104
- C. 175, 104 and 71
- D. 71, 104 and 71
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Q160
PHYSICS
Unit 7: Properties of Solids and Liquids
An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is:
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2020 (3 sets)
- A. (sqrt(2)/4) * 288 pm
- B. (4/sqrt(3)) * 288 pm
- C. (a/2) * 288 pm
- D. (sqrt(3)/4) * 288 pm
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Q162
CHEMISTRY
Unit 10: p-Block Elements
Which of the following oxoacid of sulphur has — O — O — linkage?
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2020 (7 sets)
- A. H2SO4, sulphuric acid
- B. H2S2O8, peroxodisulphuric acid
- C. H2S2O7, pyrosulphuric acid
- D. H2SO3, sulphurous acid
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Q163
CHEMISTRY
Unit 8: Chemical Kinetics
The rate constant for a first order reaction is 4.606 x 10^-3 s^-1. The time required to reduce 2.0 g of the reactant to 0.2 g is:
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2020 (8 sets)
- A. 200 s
- B. 500 s
- C. 1000 s
- D. 100 s
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Q165
CHEMISTRY
Unit 6: Equilibrium
A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is: [Use atomic masses: N=14, Ar=40]
- A. 12 bar
- B. 15 bar
- C. 18 bar
- D. 9 bar
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Q171
CHEMISTRY
Unit 12: Coordination Compounds
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
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2020 (8 sets)
- A. SCN- < F- < CN- < C2O4 2-
- B. F- < SCN- < C2O4 2- < CN-
- C. CN- < C2O4 2- < SCN- < F-
- D. SCN- < F- < C2O4 2- < CN-
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Q172
CHEMISTRY
Unit 10: p-Block Elements
Which of the following is not correct about carbon monoxide?
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2020 (3 sets)
- A. It reduces oxygen carrying ability of blood.
- B. The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.
- C. It is produced due to incomplete combustion.
- D. It forms carboxyhaemoglobin.
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Q173
CHEMISTRY
Unit 19: Biomolecules
Which of the following is a natural polymer?
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2020 (5 sets)
- A. poly (Butadiene-styrene)
- B. polybutadiene
- C. poly (Butadiene-acrylonitrile)
- D. cis-1,4-polyisoprene
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Q176
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Anisole on cleavage with HI gives:
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2020 (3 sets)
-
A.
Iodobenzene and methanol
-
B.
Phenol and ethyl iodide
-
C.
Phenol and ethanol
-
D.
Phenol and methyl iodide
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Q177
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Which of the following amine will give the carbylamine test?
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2020 (6 sets)
- A. N,N-dimethylaniline
-
B.
N-methylaniline
- C. Aniline
- D. Ethylamine
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Q178
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:
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- A. Sec. butyl alcohol
- B. Tert. butyl alcohol
- C. Isobutyl alcohol
- D. n-butyl alcohol
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Q179
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
On electrolysis of dil. sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be:
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2020 (7 sets)
- A. Oxygen gas
- B. H2S gas
- C. SO2 gas
- D. Hydrogen gas
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