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 chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

The tip of the lead pencil is made of:

  1. lead

  2. graphite

  3. zinc

  4. charcoal
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The tip of the lead pencil is made up of graphite.


Graphite can leave the grey mark on the paper. It was originally thought to be a part of lead. In spite of the name, the lead pencil does not contain lead.


Graphite is an allotrope of carbon, which is a good conductor of electricity and is resistant to many chemicals.

Graphite pencils are made of a mixture of clay and graphite.


Hence, te correct option is $\text{B}$

Multiple choice

Fossil Fuels:

  1. Will Run out Eventually

  2. Are randomly spread across the world

  3. Are plants and animals buried millions of years ago

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

Fossil fuels are finite (will run out), are unevenly distributed globally, and are formed from the remains of ancient plants and animals, making all the provided statements correct.

Multiple choice chemistry rocks and minerals carbon cycling mineral coal coal and its products
Coal is a sedimentary rock formed from plants that died a millions of years ago.

  1. True

  2. False

  3. Neither

  4. Either
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Coal is a sedimentary rock formed from plants that died millions of years ago.

As more and more layers of dead plants and animals got deposited on them, due to heat and pressure they changed to form coal.

Hence, option (A) is the correct answer.

Multiple choice chemistry rocks and minerals carbon cycling mineral coal coal and its products

Coal, natural gas and petroleum are examples of_________.

  1. fossils

  2. natural resources

  3. artificial resources

  4. fuels
Reveal answer Fill a bubble to check yourself
A,B,D Correct answer
Explanation

Coal, natural gas and petrolium are examples of natural resources which are found as fossils beneath the surface of earth and act as sources of fuel.

Multiple choice chemistry rocks and minerals carbon cycling mineral coal coal and its products

What are the conditions required for the formation of coal?

  1. High temperature

  2. High pressure

  3. Low temperature

  4. Low pressure
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

High temperature and high pressure are required for the formation of coal. When dead vegetation got buried under the soil, they were compressed under the deposited soil. Carbon got trapped in them. High temperature and pressure then converts these dead vegetation to coal.

Multiple choice chemistry rocks and minerals carbon cycling mineral coal coal and its products

Coal is formed from:

  1. dead animals

  2. dead vegetation

  3. both of the above

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Coal is obtained from dead vegetation or dead natural forests. The forests got buried under the soil, and then more soil got deposited over them. These forests got compressed under the soil and then carbon got trapped in it. High temperature and pressure convert these dead vegetation to coal.