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Questions Related to evs

An example of fossil fuel is?

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. Coal gas

  2. Coke

  3. Natural gas

  4. Producer gas

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Correct Option: A,C
Explanation:

A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms is called fossil fuel gas, thus natural gas and goal gas is fossil fuel.

In which of the following products are obtained from fossil fuels?

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. Coal

  2. Coke

  3. Coal tar

  4. Coal gas

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Correct Option: A,B,C,D
Explanation:

Products obtained from fossil fuels are

1. Coal
2. Coke
3. Coal tar
4. Coal gas

Fossil fuels are :

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. Coal

  2. Biogas

  3. Natural gas

  4. Petroleum

Show answer
Correct Option: A,C,D
Explanation:
Fossil fuels are the decayed material which are obtained by the denaturation of organic wastes over a million years. 

Generally, fossil fuels are coal, natural gas and petroleum etc.

Hence options A, C and D are correct.

Which of the following is a fossil fuel?
I Tar
II Coal
III Petroleum

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. I only

  2. I and II only

  3. II and III only

  4. I, II and III

Show answer
Correct Option: C
Explanation:

Coal and petroleum are fossil fuels. Tar is not a fossil fuel. 

A fossil fuel is obtained from the remains of organisms. It is a natural fuel.
Tar is a black mixture of hydrocarbons and free carbon. It is obtained from several organic compounds during destructive distillation. Tar can also be produced from wood, coal, petroleum or peat.

Fossils are mostly present in which of the following rocks?

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. Igneous rocks

  2. Sedimentary rocks

  3. Metamorphic rocks

  4. Coarse-grained rocks

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Correct Option: B
Explanation:

Sedimentary rocks are made up of grains of sediment that have been weathered from a pre-existing rock or mineral. The grains can be big or small, they are often rounded, and are cemented together in a matrix. Sedimentary rocks may be layered and may also contain fossils.

Which of the following is an example of fossil fuel?

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. Coal gas

  2. Coke

  3. Natural gas

  4. Producer gas

Show answer
Correct Option: C
Explanation:

Fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis. 

Natural gas is a mixture of gases which are rich in hydrocarbons. All these gases (methane, nitrogen, carbon dioxide etc) are naturally found in atmosphere. 
Natural gas reserves are deep inside the earth and is a fossil fuel. coal gas, coke and producer gas are the derivatives of coal, not naturally occurring.

Hence, option C is correct.

State true or false.


Coal gas, coke and producer gas are examples of fossil fuel.

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Coal gas, coke and producer gas are the byproducts of coal and are not fossil fuels, except natural gas which is a fossil fuel. 

Which of these is not a fossil fuel?

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources)

  1. Coal

  2. LPG

  3. Bio gas

  4. All are fossil fuel

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Correct Option: C
Explanation:

LPG is a fossil fuel which contains low carbon. It is a fossil fuel that does not occur during isolation. LPG is found naturally in combination with other hydrocarbons, crude oil, and natural gas. LPG is produced during natural gas processing and oil refining process.

Coal and Natural gas are also the fossil fuels and are obtained from earth crust.

Biogas is a mixture of methane ,carbon dioxide ,hydrogen and hydrogen sulphide. it is produced by anaerobic degradation of animal waste such as cow dunk in presence of water.

Hence options C  is correct.

CNG is a component of natural gas.

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources) fuel and conservation

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
CNG is compressed natural gas.
Hence, above statement is False.

Some natural resources are limited.

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources) fuel and conservation

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Some natural resources such as coal and petroleum are limited as they are non-renewable resources.