1. Which of the following pair(s) is/are correctly matched?
Spacecraft | Purpose |
Cassini-Huygens | Orbiting the Venus and transmitting data to the Earth |
Messenger | Mapping and investigating the Mercury |
Voyager | Exploring the outer solar system |
Select the correct answer using the code given below.
a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
2. Which reference to Agni-IV Missile, which of the following statements is/are correct?
1) It is a surface-to-surface missile.
2) It is fuelled by liquid propellant only.
3) It can deliver one-tonne nuclear warheads about 7500 km away.
Select the correct answer using the code given below.
a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
3. In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?
(1) Iris scanning
(2) Retinal scanning
(3) Voice recognition
Select the correct answer using the code given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
4. Consider the following diseases
(1) Diphtheria
(2) Chickenpox
(3) Smallpox
Which of the above diseases has/have been eradicated in India?
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None
5. Fruits stored in a cold chamber exhibit longer storage
life because
(a) exposure to
sunlight is prevented
(b) concentration
dioxide in the is increased of carbon environment
(c) rate of respiration is decreased
(d) there is an
increase in humidity
6. Many transplanted seedlings do not grow because
(a) the new soil does
not contain favorable minerals
(b) most of the root
hairs grip the new soil too hard
(c) most of the root hairs are lost during transplantation
(d) leaves get damaged
during transplantation
7. Recombinant DNA technology (Genetic Engineering) allows
genes to be transferred
(1) Across different
species of plants.
(2) From animals to
plants.
(3) From
microorganisms to higher organisms.
Select the correct
Solution using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
8. Mycorrhizal biotechnology has been used in rehabilitating
degraded sites because mycorrhiza enables the plants to
(1) Resist drought and
increase absorptive area
(2) Tolerate extremes
of PH
(3) Resist disease
infestation
Select the correct
Solution using the codes given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
9. Consider the following phenomena:
(1) Size of the sun at
dusk
(2) Colour of the sun
at dawn
(3) Moon being visible
at dawn
(4) Twinkle of stars
in the sky
(5) Polestar being
visible in the sky
Which of the above are
optical illusions?
(a) 1, 2 and 3
(b) 3, 4 and 5
(c) 1, 2 and 4
(d) 2, 3 and 5
10. Rainbow is produced when sunlight falls on drops of rain.
Which of the following physical phenomena are responsible for this?
(1) Dispersion
(2) Refraction
(3) Internal
reflection
Select the correct
Solution using the codes given below.
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Learn more:
Answers:
1. (b) 2 and 3 only
2. (a) 1 only
3. (d) 1, 2 and 3
4. (b) 3 only
5. (c) rate of respiration is decreased
6. (c) most of the root hairs are lost during transplantation
7. (a) 1 only
8. (d) 1, 2 and 3
9.(c) 1, 2 and 4
10. (a) 1 and 2 only