Who has directed the film Koozhangal which won the Best

For two different gases at the same temperature, the gas with the lighter molecules (lower molecular mass) will have, on average:

What is the chemical formula of common salt?

Which of the following statement(s) is/are true?

I. Air expands on heating

II. The warm air is heavier than the cold air

During the fermentation of sugar, the compound which is always formed is…………?

Which of the following is the best conductor of electricity?

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

Two bodies are in SHM having the same amplitude but different frequencies. The motion of the resultant is:

A coin is placed at the bottom of a tank filled with water (n = 4/3) to a depth of 12 cm. How much shall the coin appear raised?