Why is coal often used near the source of its mining whereas mineral oil is transported to great distances?

Name the region in which India's main coalfields are located. What is the quality of coal found here? What are its uses?

Name the power generated in the picture. Briefly explain the process involved in power generation in this case.

With reference to the Bhakra Nangal Dam, answer the following:

(i) Name the river on which it has been constructed.

(ii) Name two states that benefit from this project.