Fish which spend most of their lives in the sea and

Which of the following acids is present in an ant’s string?

Which disease is caused by the  Mycobacterium leprae bacteria ?

What happens to the gravitational force between two objects if the distance between them is doubled ?

The oldest type of energy known to man is –

The ozone hole that has been detected lies in the atmosphere above –

Which part of the human digestive system is responsible for nutrient absorption?

Heat from the sun reaches earth by the process of –

A body is thrown vertically upwards and then falls back on the ground. Its potential energy is maximum:

Tear gas used by the police to disperse the mob contains –