What are fossil fuels primarily formed from?

• Volcanic ash

• Ancient plants and animals

• Meteorites

• Modern vegetation

Which fossil fuel has the highest carbon content?

• Lignite

• Bituminous coal

• Anthracite

• Sub-bituminous coal

What percentage of the Philippines' power generation mix did coal contribute in 2021?

• 25%

• 58%

• 40%

• 70%

Which type of coal is known for its clean-burning properties?

• Lignite

• Bituminous coal

• Anthracite

• Sub-bituminous coal

What is a primary use of bituminous coal?

• Domestic heating

• Generating electricity

• Chemical production

• Road construction

Which type of coal has the lowest heating value?

• Anthracite

• Bituminous

• Lignite

• Sub-bituminous

Oil, also known as petroleum, is primarily used for which of the following?

• Cooking

• Transportation fuel

• Road construction

• Furniture production

What is a major component of natural gas?

• Carbon dioxide

• Methane

• Ethanol

• Oxygen

Compared to coal and oil, natural gas produces:

• More greenhouse gas emissions

• Fewer greenhouse gas emissions

• Equal greenhouse gas emissions

• No greenhouse gas emissions

Which of the following is not a common use of oil?

• Cosmetics

• Heating

• Agriculture

• Transportation