A. First test-tube baby
B. First cloned sheep
C. First cloned monkey
D. First human fossil
A. Eye is unable to adjust itself immediately
B. Retina becomes insensitive momentarily
C. Iris is unable to dilate the pupil immediately
D. Distance between the lens and retina take time to adjust
A. Selective reflection of light
B. Selective absorption of light
C. Sinterference of light
D. Natural color pattern of feathers
A. At the bottom
B. In the middle part
C. At the top surface
D. Uniformly throughout the water body
A. Of refraction
B. It is cooler at sunrise and at sunset
C. Of diffraction leading to red end of the spectrum reaching the earth
D. Of scattering of light due to dust particles and air molecules
A. The mass of the astronaut is reduced to zero
B. The astronaut and the spacecraft are both in a free-falling state
C. Gravity inside the spacecraft ceases to act
D. The astronaut is outside the influence of the earth's gravitational force
A. One fourth
B. One tenth
C. One third
D. One fifth