Over 97 per cent of coal reserves occur in certain areas in India. Which of the following area is not covered in these areas?

Valley of Damodar and Son Valley of Mahanadi Valley of Godavari Valley of Krishna

Valley of Krishna

Most of the metallic minerals in India occur in the peninsular plateau region in the old crystalline rocks. Over 97 per cent of coal reserves occur in the valleys of Damodar, Sone, Mahanadi and Godavari.