Chemistry · General Awareness
Carbon and Fossil Fuels
1,898 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
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Thermal power stations to produce electricity.
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Railway engines to produce steam to run the engine.
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Fuel in various industries.
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As a fuel in automobiles and vehicles engine.
D
Correct answer
Explanation
Coal is widely used to generate energy in thermal power stations, railway engines, and industries but is not used as a fuel in the vehicles.
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Hydrogen
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Carbon
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Sulfur
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Chlorine
B
Correct answer
Explanation
Coal is formed from the decomposition of dead organic matter, which is mainly composed of carbon. That is why the major constituent of coal is also carbon.
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Because they are formed from dead remains of living organisms.
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Because they are very good fuels and their calorific value is very high.
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Because they are widely used in houses, industries and in vehicles also.
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Because they take millions of year for formation and are formed inside the earth.
A
Correct answer
Explanation
Fossil fuels are the fuels, which are formed due to the decay of dead plants and animal remains. This process takes millions of years. Coal and petroleum are formed in nature with the same process. So, they are known as fossil fuels.
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Oxygen
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Carbon-dioxide
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Carbon-monoxide
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Nitrogen
B
Correct answer
Explanation
Complete combustion of the fuel takes place when heated in sufficient supply of air. Combustion of carbon based fuel results in the release of carbon dioxide along with large amount of heat energy.
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Coke
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Coal tar
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Coal gas
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Natural gas
D
Correct answer
Explanation
Processing of coal leads to the formation of many useful substances like coke, coal gas, coal tar etc. Natural gas is formed from the processing of petroleum and not from coal.
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Coal
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Coke
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Coal tar
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Coal gas
A
Correct answer
Explanation
Carbonization is the process of gradual conversion of remains of dead plants and animals into coal. Coke, coal tar and coal gas are the useful substances obtained by further processing of coal.
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Petroleum
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Coal tar
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Coal gas
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Coke
B
Correct answer
Explanation
Naphthalene is a useful product obtained by the processing of coal tar, which itself is obtained by the processing of coal.
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Coal tar
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Coal gas
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Bitumen
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Paraffin wax
C
Correct answer
Explanation
Bitumen is the thick, sticky substance, which is obtained by the processing of petroleum and is used for paving roads.
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Bio gas
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Natural gas
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Coal gas
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Hydrogen gas
C
Correct answer
Explanation
Biogas is produced by the biological breakdown of organic matter in absence of oxygen. Natural gas is basically methane. It is formed in a natural way or obtained during the formation of petroleum oil. Coal gas is the gas, which is obtained as the by product during processing of coal to get coke.
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Diesel
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Petrol
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Kerosene oil
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Coke
D
Correct answer
Explanation
Diesel, petrol and kerosene oil are the products obtained during the processing of crude oil petroleum. Coke is the by-product obtained during processing of coal.
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Black, thick solid with pleasant smell.
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Brown, thick solid with unpleasant smell.
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Black, thick liquid with sweet smell.
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Black thick liquid with unpleasant smell.
D
Correct answer
Explanation
Coal tar is a liquid substance with thick composition. It is black in colour and has got an unpleasant smell.
C
Correct answer
Explanation
Coal is a fossil fuel, which has been a source of energy for a long time. It was also used earlier to run steam engines.
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Coal gas
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Biogas
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Natural gas
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Hydrogen gas
A
Correct answer
Explanation
Coal gas produces a large amount of energy and is generally supplied through pipes. As a result of this property, it was first used for street lighting in London.
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Petrol
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Kerosene oil
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Diesel
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Lubricating oil
C
Correct answer
Explanation
Petrol is comparatively costlier than the other fuels. Kerosene oil is inflammable and easily catches fire. Lubricating oil is used to lubricate the engine of automobiles. Diesel is cheaper and produces large amount of energy to run heavy vehicles.
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Petrol
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Petroleum
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Coal
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Coal tar
B
Correct answer
Explanation
Petrol and coal tar are the products obtained by the processing of petroleum and coal, respectively. Coal is formed deep under the surface of earth due to the decay and decomposition of dead plants and animals. Petroleum is formed deep under the sea due to the decay and decomposition of sea plants and sea animals.