Dialysis is used for the treatment of__________?

A. Kidney failure
B. Heart weakness
C. Brain diseases
D. None of these

The most important stimulant in tea leaves is?

A. Brucine
B. Caffeine
C. Phenylalanine
D. Theine

Dolly is the name of the ?

A. First cloned sheep
B. First cloned monkey
C. First test-tube baby
D. First human fossil

Which part of the Camera is analogue to the retina in the human eye?

A. Lens
B. Film
C. Aperture
D. Shutter

What is the average adult pulse rate?

A. 140-150
B. 115-125
C. 72-80
D. 60

The beautiful color patterns exhibited by a peacock in its tail feathers are due to ?

A. Selective absorption of light
B. Selective re ection of light
C. Sinterference of light
D. Natural colour pattern of feathers

A lake starts freezing because of the cold atmosphere. It will first freeze

A. At the bottom
B. Ln the middle pan
C. At the top surface
D. Uniformly throughout the water body

The sun appears red at sunrise and sunset while it appears white at noon, because

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.

An astronaut inside a spacecraft is in a state of weightlessness. This implies that?

A. The mass of the astronaut is reduced to zero
B. Gravity inside the spacecraft ceases to act
C. The astronaut is outside the influence of the earth’s gravitational force
D. The astronaut and the spacecraft are both in a free-failing state

An iceberg is floating in sea. How much of its mass will remain above the surface of water?

A. One tenth
B. One fifth
C. One fourth
D. One third