Tag: reason for finishing of materials (resources)

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Multiple choice evs how to save fuel define fossil fuels conservation of fuels 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.

  1. A and B

  2. B and C

  3. C and D

  4. D and B
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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.

  1. A and B

  2. B and D

  3. C and A

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

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


Hence option B is correct.

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

In what form fuels store their energy?

  1. Chemical

  2. Nuclear

  3. Both A and B

  4. Thermal

Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Natural resources which are limited are called as _________.

  1. renewable

  2. non-renewable

  3. man-made

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