Which organization reported the fourth global mass coral

A mixture of carbon monoxide and hydrogen is known as ______

Diamond is harder than graphite because of which of the following reason?

If water smells bad, then that odor can be removed by adding:

What is the name of the acid in an ant's sting?

In which form is iron ore primarily found in nature?

The washing machine works on the principle of -

Absolute alcohol is prepared from rectified spirit by using the following process :

Who among the following is known for the discovery of atomic-bomb?

Flemings right hand rule is used to find the direction of the –

How can a mixture of sand and salt be separated?