Tag: evs

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Questions Related to evs

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

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

  1. I only

  2. I and II only

  3. II and III only

  4. I, II and III
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Fossils are mostly present in which of the following rocks?

  1. Igneous rocks

  2. Sedimentary rocks

  3. Metamorphic rocks

  4. Coarse-grained rocks
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Which of the following is an example of fossil fuel?

  1. Coal gas

  2. Coke

  3. Natural gas

  4. Producer gas
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Which of these is not a fossil fuel?

  1. Coal

  2. LPG

  3. Bio gas

  4. All are fossil fuel
Reveal answer Fill a bubble to check yourself
C Correct answer
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.