Burning coal that contains sulphur releases a gas that is a principal cause of acid rain. Which gas is it?

हल

1. 01

   Sulphur in coal burns to sulphur dioxide, which enters the atmosphere with the flue gases.

2. 02

   There it reacts with water vapour to form sulphuric acid, which falls as acid rain.

3. 03

   Carbon monoxide is a product of incomplete burning and is toxic but not a major cause of acid rain; nitrogen itself is unreactive in air.