Tag: reason for finishing of materials (resources)

Questions Related to reason for finishing of materials (resources)

The gaseous fuels
(A) burn without producing smoke
(B) has low calorific value
(C) are easy to ignite
(D) have high calorific value.
Select the correct alternatives.

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

  1. A and B

  2. B and C

  3. C and D

  4. D and B

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Correct Option: C
Explanation:

Gaseous fuels can be easily transported through pipeline and they leave no residue after burning.


 Gaseous fuels have low ignition temperature and thus burns easily. 

Moreover they possess high calorific value in comparison to solid and liquid fuels.

Option C is correct.

The neccesary conditions for combustion process of occur are :
(A) availability of air/oxygen
(B) availability of air/oxygen and fuel
(C) temperature of fuel below ignition temperature
(D) temperature of fuel above ignition temperature
Select the correct alternatives.

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

  1. A and B

  2. B and D

  3. C and A

  4. D and A

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Correct Option: B
Explanation:

For combustion, fuel, oxygen/air and a temperature more than ignition temperature of the fuel is required.


Hence option B is correct.

The burning of fossil fuels causes air pollution, acid rains and increases the temperature of the globe.

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

  1. True

  2. False

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Correct Option: A
Explanation:

Greenhouse gases are produced by the burning of all fossil fuels that cause air pollution, acid rains and increases the temperature of the globe.

P.C.R.A stands for Petroleum Conservation Research Association.

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

  1. True

  2. False

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Correct Option: A
Explanation:

The Petroleum Conservation Research Association is an Indian organization that promotes energy efficiency.

Fossil fuel are exhaustible natural resources.

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

  1. True

  2. False

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Correct Option: A
Explanation:

Fossil fuels are non-renewable or exhaustible natural resources.

In what form fuels store their energy?

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

  1. Chemical

  2. Nuclear

  3. Both A and B

  4. Thermal 

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Correct Option: C
Explanation:

All the fuels store the energy in form of chemical energy except nuclear fuels. Nuclear fuels stores their energy in the form of nuclear energy. So fuel is defined as a matter which stores its energy in the form of potential energy and it can be released to do work.

Natural resources which are limited are called as _________.

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

  1. renewable

  2. non-renewable

  3. man-made

  4. synthetic

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Correct Option: B
Explanation:

Natural resources which are present in a limited amount in nature are called as non-renewable sources. They are prepared by natural processes in long duration of time and have limited supply. Hence, they are non-renewable.

Which of the following is a non-renewable source of energy?

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

  1. Coal

  2. Petroleum

  3. Natural gas

  4. All of the above

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Correct Option: D
Explanation:

Non-renewable source of energy. It is energy that will run out or will not be replenished in our timelines. Example: Coal, petroleum, natural gas.

Which of the following is the renewable source of energy?

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

  1. Coal

  2. Petroleum

  3. Solar energy

  4. None of the above

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Correct Option: C
Explanation:

Renewable source of energy:- It is energy that is collected from naturally replenished on a human time scale. Example: Sunlight, wind, rain, waves, heat. So answer is Solar energy.

Naphthalene balls are prepared from which of the natural resources?

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

  1. Coke

  2. Coal tar

  3. Petroleum

  4. All of these

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Correct Option: B
Explanation:

Naphthalene balls are the product of coal tar. Coal tar is obtained form coal.