Tag: evs

Questions Related to evs

Hydrogen gas obtained form natural gas is used in ___________.

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

  1. motor fuel

  2. fertilizers

  3. stoves

  4. paints

Show answer
Correct Option: B
Explanation:

Natural gas which is obtained from petroleum produces hydrogen gas. Hydrogen gas is used as fertilizer in the fields.

Coal is the limited natural resources which on distillation produces __________.  

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

  1. coal tar

  2. coke

  3. petroleum product

  4. all of these

Show answer
Correct Option: D
Explanation:

Coal is the limited natural resources which is limited in amount. Coal on further distillation produces coal tar, coke and petroleum product.

Coal tar has an _______ smell.

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

  1. unpleasant

  2. pleasant

  3. Both A and B

  4. none of these

Show answer
Correct Option: A
Explanation:

Coal tar is a distillation product of coal which is a limited natural resource. Coal tar is a black coloured product of coal with an unpleasant smell.

Useful substances obtained from petroleum and natural gases are called as ________.

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

  1. petroleum products

  2. petrochemicals

  3. chemicals

  4. none of these

Show answer
Correct Option: B
Explanation:

Petrochemicals are the products of petroleum and natural gases. Like liquefied petroleum gas used as domestic fuel in the house hold. 

Going paperless is the way to conserve _______.

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

  1. trees

  2. water

  3. coal

  4. none of these

Show answer
Correct Option: A
Explanation:

Worldwide, use of paper has risen by 400% in the last 40 years. This increased usage takes a huge toll on trees. Rapid deforestation – much of it to produce paper products – is a huge concern for our environment. Trees play a critical role in absorbing $CO _2$ from our atmosphere and producing oxygen to support life on our planet. 

Natural gases are nothing but _______ .

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

  1. Compressed natural gas

  2. Compressed gas

  3. Normal gases

  4. None of these

Show answer
Correct Option: A
Explanation:

Natural gas is a naturally occurring gas mixture consisting primarily of methane, but including higher alkanes and sometimes a small percentage of $CO _2,N _2,H _2S$ or helium.


Whereas compressed natural gas is methane stored at high pressure. So, natural gas is nothing but CNG.

Hence the option A is correct.

_________ are the primary reason for finishing materials ( resources ) fastly.

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

  1. Sources

  2. Population

  3. Light

  4. None of these

Show answer
Correct Option: B
Explanation:

B, Population is the primary reasons for finishing resources fastly.  As population has increased, the demand of these resources have also increased.

______ are responsible for declining resources.

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

  1. Unlimited use of resources

  2. Wastage of resources

  3. Both a and b

  4. None of these

Show answer
Correct Option: C

If materials (resources) are finished, then people will struggle for ________ for energy.

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

  1. coal

  2. petroleulm

  3. both a and b

  4. None of these

Show answer
Correct Option: C
Explanation:
Coal, petroleum, and natural gas are considered nonrenewable because they can not be replenished in a short period of time. 

These are called fossil fuels.

A non-renewable resource (also called a finite resource) is a resource that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames.

Hence the option C is correct.

Which of the following is a false statement?

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

  1. To overcome the energy crisis the use of solar cooker must be increased.

  2. To overcome the energy crisis more amount of non-renewable sources of energy must be used.

  3. The re-usage of waste material as a source of energy can be done to overcome the energy crisis.

  4. To overcome the energy crisis water has to be saved.

Show answer
Correct Option: B
Explanation:

To overcome the energy crises more amount of renewable sources of energy must be used because renewable sources of energy can be used again and again and solar energy is a renewable source of energy.


So, option B is not correct.