Ilmenite and rutile, abundantly available in certain coastal tracts of India, are rich sources of which one of the following?

In which of the following parts of India are the largest reserves of mineral resources found?

Which one of the the following is largest lignite coal field in India?

Which of the following Mineral occurs in Kerala abundantly?

Which of the following mines is an important mine of bauxite in India?

Which of the following river valleys is rich in coal reserves in India?