Before sowing soya bean seeds are covered with jaggery and rhizobium. Why?

1. Jaggery acts as a binding agent for the nitrogen fixing bacteria and the seed.
2. Jaggery is rich in nutrients like iron and magnesium.
3. Jaggery is a natural soil conditioner.
4. All of the above.

Which of the following crops are grown together as they have same climatic requirements?

1. Mustard and Wheat
2. Sugarcane and Soya bean
3. Mustard and groundnuts
4. All of them.

Name the crop that is a Kharif crop in most of India but a summer crop in Tamil Nadu.

1. Sugarcane
2. Groundnut
3. Soya bean
4. Mustard

Name one state in North and one in South India where sugarcane is grown extensively.