What is the primary component of coal?

Which type of coal has the highest carbon content?

Which is the main process by which coal is formed?

Which country is the largest producer of coal in the world?

Which of the following is a major by-product of burning coal?

Petroleum is formed from the remains of which type of organisms?

What is the raw material from which petroleum is refined?

Which is the primary use of petroleum?

Natural gas is mainly composed of which compound?

Which of the following is an example of a non-renewable resource?

What is the process of separating crude oil into its components called?

Which of the following is a major environmental concern associated with the use of coal?

Which type of coal is used for generating electricity?

Which country has the largest reserves of petroleum in the world?

Which of the following is a renewable source of energy?

Which of the following is a major component of natural gas?

Which method is used to extract coal from deep underground mines?

The burning of coal and petroleum contributes to which of the following environmental problems?

Which of the following is NOT a product derived from petroleum?