Choose the word nearest in meaning to the given word.

The refractive index of water and turpentine oil are 1.33 and 1.47, respectively. A ray of light travels from

Glycol is used to manufacture which of the following?

Which of the following is a compound?

Which of the following is the active component of the air?

Sound waves in air are:

A transformer cannot work on:

The dimensions of angular momentum are:

What happens when sodium reacts with water?

Which metal is the best conductor of electricity?