Q1
mcq
To project the rockets which of the following principle(s) is/are required?
- A. Newton's third law of motion
- B. Newton's law of gravitation
- C. Law of conservation of linear momentum
- D. Both (a) and (c)
Solution hidden
Log in to view solution →
Q2
mcq
SI unit of resistance is __________.
- A. Mho
- B. Joule
- C. Ohm
- D. Watt
Solution hidden
Log in to view solution →
Q3
mcq
Sound waves travel in air with a speed of about __________ at NTP.
- A. $340\times10^8$ m/s
- B. 340 m/s
- C. $3\times10^8$ m/s
- D. $3\times10^{-8}$ m/s
Solution hidden
Log in to view solution →
Q4
mcq
Unit of radioactivity is __________.
- A. Roentgen
- B. Curie
- C. Becquerel
- D. All of the above
Solution hidden
Log in to view solution →
Q5
mcq
Alloy used in the manufacturing of pressure cooker is __________.
- A. Brass
- B. Bronze
- C. Magnalium
- D. Duralumin
Solution hidden
Log in to view solution →
Q6
mcq
The IUPAC name of an organic compound is 3-methyl butan-1-ol. What type of compound it is?
- A. Aldehyde
- B. Carboxylic Acid
- C. Ketone
- D. Alcohol
Solution hidden
Log in to view solution →
Q7
mcq
The concept of blood group is derived by __________.
- A. Wiener
- B. Karl Landsteiner
- C. William Harvey
- D. His
Solution hidden
Log in to view solution →
Q8
mcq
Syngamy results in the formation of __________.
- A. Zoospores
- B. Conidia
- C. Zygote
- D. Chlamydospores
Solution hidden
Log in to view solution →
Q9
mcq
The large elongated cells that provide nutrition to developing sperms are __________.
- A. Primary germ cells
- B. Sertoli cells
- C. Leydig cells
- D. Spermatogonia
Solution hidden
Log in to view solution →
Q10
mcq
Life originates from pre-existing life was showed by:
- A. Louis Pasteur
- B. Oparin
- C. Haldane
- D. Lamarck
Solution hidden
Log in to view solution →
Q11
mcq
Pusa Komal is a disease resistant variety of __________.
- A. Sugar cane
- B. Rice
- C. Cow pea
- D. Maize
Solution hidden
Log in to view solution →
Q12
mcq
__________ is a rice variety produced by mutation breeding that grows well in saline soil.
- A. Sharbati Sonora
- B. Atomita 2
- C. Pusa Gaurav
- D. Himgiri
Solution hidden
Log in to view solution →
Q13
mcq
When a sound wave travels through air, the air particles:
- A. vibrate along the direction of the wave motion.
- B. vibrate but not in any fixed direction.
- C. vibrate perpendicular to the direction of the wave motion.
- D. do not vibrate.
Solution hidden
Log in to view solution →
Q15
short answer
What is the minimum distance needed for an Echo?
Solution hidden
Log in to view solution →
Q20
short answer
Distinguish between somatic gene therapy and germ line gene therapy.
Solution hidden
Log in to view solution →
Q21
short answer
How is Cancer Cell different from Normal Cell?
Solution hidden
Log in to view solution →
Q24
short answer
Write the symbol for the following component.
(i) Ground connection
(ii) Resistor
(iii) Light emitting diode
(iv) A diode
Solution hidden
Log in to view solution →
Q25
short answer
A charge of 12 Coulomb flows through a bulb in 5 seconds. What is the current through the bulb?
Solution hidden
Log in to view solution →
Q27
short answer
Calculate the molecular mass of $\mathrm{CO_2}$.
Solution hidden
Log in to view solution →
Q28
short answer
How is rust formed? Give the equation for formation of rust.
Solution hidden
Log in to view solution →
Q30
short answer
What is photosynthesis and where does it occur in a cell?
Solution hidden
Log in to view solution →
Q31
short answer
Differentiate Aerobic and Anaerobic respiration.
Solution hidden
Log in to view solution →
Q32
short answer
Name the gaseous plant hormone. Mention any three of its physiological effects in plants.
Solution hidden
Log in to view solution →
Q36
long answer
Discuss the importance of biotechnology in the field of medicine.
Solution hidden
Log in to view solution →
Q37
short answer
How do rainwater harvesting structures recharge ground water?
Solution hidden
Log in to view solution →
Q38
short answer
$^{238}_{92}\mathrm{U}$ experiences $\alpha$-decay. Find the number of neutrons in the daughter element.
Solution hidden
Log in to view solution →
Q39
long answer
State Newton's laws of motion.
OR
(i) Differentiate the eye defects: Myopia and Hypermetropia.
(ii) Write any 2 applications of concave lens.
Solution hidden
Log in to view solution →
Q40
long answer
(i) What happens when $\mathrm{MgSO_4\cdot7H_2O}$ is heated? Write the appropriate equation.
(ii) Explain hygroscopic substances and deliquescent substances with examples.
OR
(i) What are called thermolysis reactions?
(ii) Differentiate reversible and irreversible reactions.
Solution hidden
Log in to view solution →
Q41
long answer
(i) Enumerate the functions of blood.
(ii) Guard cells are responsible for opening and closing of stomata. Give reason for this statement.
OR
(i) Suggest measures to overcome the problems of an alcoholic.
(ii) What are the contributing factors for obesity?
Solution hidden
Log in to view solution →