31.

What is the importance of agriculture in India ? Mention two factors.

Give geographical reasons for the following :

i. Tea is grown on hill slopes.

ii. Silver oak and banana trees are grown on coffee plantations. 

Explain the following :

i. The propagation of rubber by the bud grafting method.

ii.The propagation of sugarcane by ratooning. 

iii. The propagation of paddy by transplantations.

Mention three problems of the sugar industry in India.

Name a state which produces short staple cotton. Which climate and soil conditions favour the cultivation of cotton in the state mentioned ?

Give geographical reasons for the following ;

Jute has to be retted. 

 Give two reasons why the woollen industry has not developed as well as the cotton industry in India. 

State two factors which favour the silk industry in Karnataka. 

In what way does the cotton industry contribute to the economy of India ? Mention any three relevant factors. 

What are petrochemicals ? Name any two products made from pet rot chemicals.