Chemistry · General Awareness

Carbon and Fossil Fuels

1,756 Questions

Review fundamental concepts regarding carbon compounds, coal distillation, and fossil fuel formation. This segment covers the chemical properties and industrial applications of natural gas and crude oil. Practicing these questions will strengthen your chemistry foundation for general science sections.

Coal distillationPetroleum formationProperties of crude oilNatural gas applications

Carbon and Fossil Fuels Questions

Multiple choice

Biogas can be a good substitute for

  1. natural gas

  2. petroleum and diesel

  3. coal and charcoal

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

compressed biogas is a potential substitute of even petrol and diesel.

Multiple choice

The inactive form of carbon is ____

  1. coal

  2. charoal

  3. diamond

  4. graphite
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Diamond is chemically the most inactive form of carbon due to its extremely strong sp³ tetrahedral bonds and lack of free electrons. It does not react with most acids, bases, or other chemicals under normal conditions. Coal and charcoal are amorphous and more reactive.

Multiple choice

Which of the following is the combined state of carbon?

  1. Carbon dioxide

  2. Fossil fuels

  3. Organic compounds

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Carbon exists in nature in both free states (diamond, graphite) and combined states (carbon dioxide, carbonates, hydrocarbons/fossil fuels, organic compounds).

Multiple choice

Diamond burns on strong heating to form?

  1. Carbon dioxide

  2. Sulpur dioxide

  3. Calcium carbonate

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Diamond is a pure form of carbon. When burned in the presence of oxygen, it reacts to form carbon dioxide.

Multiple choice

Gunpowder is a mixture of

  1. sand and TNT

  2. TNT and charcoal

  3. nitre, sulphur and charcoal

  4. sulphur, sand and charcoal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gunpowder, also known as black powder, is a traditional mixture of sulfur, charcoal, and potassium nitrate (nitre).

Multiple choice

Which of these fits gap 19?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.
Fire ____(17)_____ things hot by adding heat, and that raises temperature.
You _______(18)______ a fire with its hissing tongues of orange flame.
When something gets too hot and its temperature rises more than it can take, it bursts into hot flames and _____(19)_____ to burn.

Fire is _____(20)_____ than sunlight and it quickly heats up anything it touches.

  1. ends

  2. leads

  3. starts

  4. prefers
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The burning starts.

Multiple choice

If we want to fight fire we should do :-

  1. We should cool down combustible substance below ignition temperature

  2. We should cut off the supply of oxygen

  3. We should remove combustible substance

  4. We should remove combustible substance
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

fact