The primary staple food grain consumed in Tamil Nadu is:

Rice
Wheat
Maize
Sorghum

The primary staple food grain consumed in Tamil Nadu is rice. Rice is a cereal grain that is widely consumed in Asia and other parts of the world. It is a major source of carbohydrates, dietary fiber, and protein. Rice is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.

Wheat is another cereal grain that is widely consumed in many parts of the world. It is a major source of carbohydrates, dietary fiber, and protein. Wheat is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.

Maize is a cereal grain that is widely consumed in North America, South America, and Africa. It is a major source of carbohydrates, dietary fiber, and protein. Maize is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.

Sorghum is a cereal grain that is widely consumed in Africa and Asia. It is a major source of carbohydrates, dietary fiber, and protein. Sorghum is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.

In Tamil Nadu, rice is the primary staple food grain. It is grown in the state’s many rice paddies, and it is a major part of the state’s economy. Rice is eaten in many different ways in Tamil Nadu, including as a main course, a side dish, and a snack. It is also used to make a variety of dishes, such as idli, dosa, and sambar.