3216: Assertion (A):
According to statistics, more female children, are born each year than male children in India.
Reason (R):
In India, the death rate of a male child is higher than that of the female child.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
3217: A car is running on a road at a uniform speed of 60 km/hr. The net resultant force on the car is:
(a) Driving force in the direction of car's motion
(b) Resistance force opposite to the direction of car's motion
(c) An inclined force
(d) Equal to zero
3218: The rising of evening star Venus indicates:
(a) South pole
(b) North pole
(c) East
(d) West
3219: King Cobra is the only snake that makes its own nest. Why does it make its nest?
(a) It is a snake-eater and the nest helps attract other snakes
(b) It is a viviparous snake and needs a nest to give birth to its offspring
(c) It is an oviparous snake and lays its eggs in the nest and guards the nest until they are hatched
(d) It is a large, cold blooded animal and needs a nest to hibernate in the cold season
3220: When a CD (Compact Disc used in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of
(a) reflection and diffraction
(b) reflection and transmission
(c) diffraction and transmission
(d) refraction, diffraction and transmission