What is an

Which one of the following crops enriches nitrogen content in the soil?

Which vitamin deficiency is most directly associated with night blindness in humans?

A colour-blind person cannot –

What is 'Blue Baby Syndrome' caused by?

Name the largest gland found in human body :

You are given two liquid mixtures "X" and "Y". Both appear to be homogeneous, but "X" does not scatter light

In a nuclear reactor, one of the following is used as a fuel.

The surface temperature of the Sun is nearly -

Muscle fatigue is due to the accumulation of

Which gas is most responsible for the 'Greenhouse Effect' on Earth?