Burning in the presence of oxygen is called :

Solar energy is an example of which source of energy ?

Name the coolant gas used in refrigerators ?

Mixture of smoke and fog is called :

Sulphur dioxide and nitrogen oxides are oxidised to form sulphuric acid and  ?

Name the carcinogen present in the cigarette smoke ?

Bhopal Gas Tragedy was in the year ?

Which causes brown air in traffic congested city ?

In Bhopal Gas Tragedy which gas is leaked out from a fertilizer factory ?

Which is generated during the burning of coal and petroleum products ?