What does the Coolie Begar system in modern Indian

Which of the following alkali metals has the highest specific heat?

The device which transfer the signal from low resistance region to high resistance region is –

Which type of wave does not require a medium for propagation?

What is the chemical name for baking soda?

A soap bubble and a liquid drop both have same surface tension and radius, then which will have more excess pressure inside it?

Which base is present in soap?

Perspiration cools the body because

The sound produced by a bat is –

A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is –

Alkali metals have ______.

I. low melting points

II. low densities