Non-food crops: coconut, channa

Non-food crops are the ones which are not meant for direct consumption. It is mainly grown with the purpose of sale and not to be used as a food product. Therefore, from the given options coconut and channa are the non-food crops.

Dhal: Urad Dal, Toor Dal, Green grams

Dhal is the various types of dal and pulses mainly lentils. From the given options, urad dal, toor dal and green grams are examples of dhal.

North-east monsoon: October-December

The North-east monsoon is a major source of water for Tamil Nadu and it lasts from October to December and so the third option is correct.

Small farmers: less than 1 hectare of cultivable land

Small farmers are the ones that cultivate on small pieces of land which is less than 1 hectare.

No. of farmers in 2015: 79,38,000

The no. of farmers in 2015-16 were 79,38,000.