What is the most famous feature of Chiria located in West Singhbhum?

Famous ‘Ruhr coalfield’ is situated in which of the following countries?

Climax mine, the largest producer of molybdenum, is located in

Noamundi and Kiriburu Mines are famous for iron ore mining in India. In which of the following States are they located?

At which of the following places the Copper Industry is located?

Which one of the following coalfields is not located in Jharkhand?