Which of the following is the cleanest fossil fuel?
A. Natural gas
B. Petrol
C. Petroleum
D. Coal
Answer:A
Which of the following is the cleanest fossil fuel?
A. Natural gas B. Petrol C. Petroleum D. Coal
Explanation: Natural gas is often described as the cleanest fossil fuel. Petroleum is a raw form of fossil fuel found in oceans and seas. Petrol is a processed product of petroleum.