Chemistry · General Awareness

Carbon and Fossil Fuels

1,756 Questions

Review fundamental concepts regarding carbon compounds, coal distillation, and fossil fuel formation. This segment covers the chemical properties and industrial applications of natural gas and crude oil. Practicing these questions will strengthen your chemistry foundation for general science sections.

Coal distillationPetroleum formationProperties of crude oilNatural gas applications

Carbon and Fossil Fuels Questions

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) fuel and conservation

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

  1. petroleum products

  2. petrochemicals

  3. chemicals

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

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)

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.