Tag: chemistry

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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.