Which of the following fuels is/are fossil fuels?
I.Coal
II.Petroleum
III.Wood

Correct option is C

The correct answer is (c) I and II (Coal and Petroleum)

Explanation:

Fossil fuels are natural fuels formed from the remains of ancient plants and animals buried under the Earth's surface for millions of years. They are rich in carbon and hydrogen and serve as primary sources of energy.

• Coal is a fossil fuel formed from the decomposition of plant material buried under layers of sediment and subjected to high pressure and temperature over millions of years.
• Petroleum (Crude Oil) is a fossil fuel formed from the remains of tiny marine organisms that were buried under ocean sediments and transformed by heat and pressure over time.

However, wood is not a fossil fuel because it comes from recently living trees and is classified as a biomass fuel rather than a fossil fuel.

Information Booster:

Characteristics of Fossil Fuels:

• Formed over millions of years from decomposed organic matter.
• Non-renewable – They take a long time to replenish.
• Release carbon dioxide (CO₂) when burned, contributing to global warming.
• Have high energy content, making them efficient for power generation and transportation.

Natural Alternatives to Fossil Fuels:

• Solar Energy – Capturing sunlight to generate electricity.
• Wind Energy – Using wind turbines to produce power.
• Hydropower – Generating electricity from moving water.
• Biofuels – Renewable fuels made from organic materials like plants and algae.