Which one of following is produced during the formation of photochemical smog?

Consider the following animals of India: 1. Crocodile 2. Elephant Which of these is/are endangered species?

Which one among the following covers the highest percentage of forest area in the world?

Assertion (A): Coal based thermal power stations contribute to acid rain. Reason (R): Oxides of carbon are emitted when the coal burns.

Assertion (A): Unlike temperate forests, the tropical rain forests, if cleared, can yield productive farm-land that can support intensive agriculture for several years even without chemical fertilizer…

Which one among the following has the largest shipyard in India?

A hydrogen inflated polythene balloon is released from the surface of the earth. As the balloon rises to an altitude up in the atmosphere, it will