Which of the following countries is leading producer of Gold in the World in the year 2023 ?

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

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

Which of the following is not an Iron ore producing area of Orissa?

In which of the following states of India, silver is not found?

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