Questions

What happens to the Potential and Kinetic energies of a body as it falls down from a height?

___ is used to control the fission reaction rate in a nuclear reactor as it absorbs neutrons without itself getting into fissioning.

The most active ingredient in bleaching powder is

Intestinal bacteria synthesizes which of the following in the human body?

Javier Mascherano of Argentina announced his retirement. He belonged to which sport?

"Hema Malini : Beyond the Dream Girl" is authored by which author?

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Let us examine the facts in the case more ____________. First of all, language is no more ____________ a medium; it is like air to the creatures of the land or water to fishes. If it is perfectly clear and pure, we do not notice it any more than we notice pure air when the sun is shining ________ a clear sky, or the taste of pure cool water when we drink a glass __________ a hot day. Unless the sun is shining, there is no brightness; unless the water is cool, there is __________ refreshment.

there is __________ refreshment.

A 5 kg object is raised through a height of 4 m. The work done by the force of gravity acting on the object is (take g = 10 m/s2)