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 allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

When superheated steam is passed through white-hot wood charcoal, it gets reduced to a mixture of X and Y and it is named as Z. Identify Y

  1. $CO _2$
  2. $SO _2$
  3. $H _2$
  4. $NO _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$C\xrightarrow{supre\ heated\ H _2O}CO+H _{2}$


From the given option Y would be Hydrogen $(H _2)$
Hence, option (C) is correct.

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

Bone charcoal is prepared by destructive distillation of bones.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Animal charcoal is produced from bones, horn, blood, etc. Bone-black, or bone-charcoal, is obtained by the destructive distillation of bones in iron retorts, the distillate constituting bone- oil or Dippel's oil

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

Process of conversion of wood into coal by biochemical process, taking over millions of years is called:

  1. catenation

  2. carbonation

  3. pyrolysis

  4. destructive distillation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Process of conversion of wood into coal by biochemical process is known as Carbonization. Coal burns cleaner than wood burning coal was easier because coal burned longer than wood.

Carbonization is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation. It is often used in organic chemistry with reference to the generation of coal gas and coal tar from raw coal.

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

When super heated steam is passed through red hot wood charcoal, it gets reduced to a mixture of $X$ and $Y$ and this mixture is named as $Z$. Identify the mixture $Z$.

  1. Producer gas

  2. Water gas

  3. Coal gas

  4. Soda water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When super heated steam is passed through hot wood charcoal then reaction takes place as


$C + H _2O \rightarrow CO + H _2$

The combination of $CO$ and $H _2$ is known as water gas.

Multiple choice zoology environmental issues ecology and environment

Incomplete burning of petrol or diesel in vehicles creates .......... gas which is very poisonous. 

  1. Carbon dioxide

  2. Carbon monoxide

  3. Methane

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

Incomplete burning of petrol or diesel in vehicles creates carbon monoxide. Carbon monoxide, when inhaled, reduces the oxygen carrying capacity of the blood. Thus, is dangerous for life.

Multiple choice zoology environmental issues ecology and environment

PUC certificate is omitted to the vehicles which

  1. Run under low consumption of fuel

  2. Has low emission

  3. Greater acceleration power

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PUC certificate is not omitted for any of the vehicles that run on fossil fuels (petrol, diesel etc) and release some kind of exhaust. 

So, the correct answer is 'None of the above'

Multiple choice

All of the following add carbon to the atmosphere EXCEPT...

  1. burning petroleum

  2. constructing highways

  3. using coal in power plants

  4. planting trees
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Burning petroleum, using coal, and constructing highways (which involves heavy machinery and materials) all contribute to carbon emissions. Planting trees removes carbon dioxide from the atmosphere through photosynthesis.

Multiple choice

Which is NOT a factor in the creation of fossil fuels?

  1. Time

  2. Heat

  3. Pressure

  4. Melting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fossil fuels are formed over millions of years from the remains of ancient organisms subjected to intense heat and pressure. Melting is a phase change that does not contribute to the fossilization process.

Multiple choice

All of the following are examples of fossil fuels EXCEPT - 

  1. Coal

  2. Petroleum

  3. Corn oil

  4. Natural gas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fossil fuels include coal, petroleum, and natural gas, which are derived from ancient organic matter. Corn oil is a vegetable oil produced from corn, which is a modern biological source, not a fossil fuel.

Multiple choice geography manufacturing industries in india - ii : mineral-based electronic, heavy and petrochemical industries in india indian industries industries in india

Which of the following are produced in petrochemical industry?

  1. Fertilisers and insecticides

  2. Resins, adhesives for industries

  3. Plastic sheets, plastic foam, bowls and baskets, paints.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Petrochemicals can be converted into thousands of industrial and consumer products, including PLASTICS, paints, RUBBER, fertilizers, detergents, dyes, TEXTILES and solvents. The industry consists of 2 major divisions. The primary petrochemical industry produces basic chemicals, such as ethylene, from oil or gas.

Multiple choice geography manufacturing industries in india - ii : mineral-based electronic, heavy and petrochemical industries in india indian industries industries in india

Smoke emitted by chemical and paper factories, refineries, etc., can be reduced by using _______.

  1. Coal

  2. Petrol

  3. Gas

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Smoke emitted by chemical and paper factories, refineries etc., can be reduced by using gas instead of coal and petrol. This is because coal and petrol are carbonaceous fossil fuels with high carbon content which is emitted on burning coal and petroleum. This can be far reduced by using gases like biogas etc.