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 chemistry rocks and minerals coal and its products study of coal coal

Which type of coke is considered as pure coke?

  1. The coke which contain less quantity of carbon

  2. The coke which contain less quantity of sulphur

  3. The coke which contain less quantity of ash

  4. Both b and c
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The coke which contain less quantity of ash, sulfur and high quantity of carbon is called as pure coke.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Low temperature carbonisation __________.

  1. is mainly for production of smoke full coke

  2. is mainly for producing smokeless domestic coke

  3. is producing less quantity tar

  4. is meant for the production of metallurgical coke
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbonisation is the procedure in which carbon dioxide is added to the coke to make it smokeless.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Naphthalene which is used to repel moths and other insects is obtained from:

  1. Coal Tar

  2. Petroleum

  3. Coke

  4. Paraffin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Naphthalene which is used to repel moths and other insects is obtained from coal tar.
Coal tar is a thick black liquid. It is obtained from the distillation of bituminous coal. It contains benzene, naphthalene, phenols, aniline, and many other organic chemicals.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Coal can be used as a:

  1. purifier

  2. fuel

  3. insecticide

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

Coal is a fossil fuel that forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite.The most significant uses of coal are in electricity generation, steel production, cement manufacturing and as a liquid fuel.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Coal tar is a main source of:

  1. Aromatic compounds

  2. Aliphatic compounds

  3. Cyclo alkanes

  4. Hetero cyclic compounds
Reveal answer Fill a bubble to check yourself
A,D Correct answer
Explanation

Coal tar is obtained by cooling the gas that is formed during the destructive distillation of coal to approximately ambient temperature. It is a black, viscous liquid composed primarily of a complex mixture of condensed-ring aromatic hydrocarbons.

These are mixtures of phenols, polycyclic compounds and Heterocyclic compounds.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

Coal tar which is main source of organic compounds is obtained as by product during?

  1. destructive distillation of wood

  2. destructive distillation of bones

  3. destructive distillation of coal

  4. all of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Coal tar which is main source of organic compounds is obtained as by product during the destructive distillation of coal.

Coal tar is a thick black liquid which is the  by-product of the production of coal gas and coke by the ddestructive distillation of coal which  contains benzene, naphthalene. Coal tar is used for medical and industrial purposes. However, coal is also known as cutar.

Hence option C is correct.

Multiple choice chemistry rocks and minerals coal and its products study of coal coal

The main constituent of pitch during destructive distillation of coal tar is:

  1. xylene

  2. anthracene

  3. carbon

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

The main constituent of pitch during destructive distillation of coal tar is carbon in various other forms.

Hence option C is correct.

Multiple choice evs - i rules are for everyone natural resources and their types promotion of renewable resources protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Petroleum is a

  1. Non-renewable source

  2. Renewable source

  3. A synthetic product

  4. An inconvenient source
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Inexhaustible resource is a natural resource, which is found in such abundance, that it is unlikely to diminish or get exhausted. E.g., air, solar energy, wind power, rainfall etc.
Exhaustible resource is a natural resource, which is likely to diminish and get exhausted due to continuous use or exploitation. E.g., minerals, fossil fuels, forests etc. Exhaustible resources are of two types renewable and non-renewable.
Renewable exhaustible resource is a natural resource, which gets replenished, recycled or reproduced. E.g., forests, water, agriculture etc.
Non-Renewable exhaustible resource is a natural resource, which is likely to get exhausted with use. E.g., fossil fuels like petroleum.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Fuel wood is

  1. Renewable source of energy

  2. Source of alcohol

  3. Source of biogas

  4. Source of petroleum gas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fuel wood is considered a renewable source of energy because it can be replenished through the growth of new trees, provided the rate of consumption does not exceed the rate of regrowth.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

The fossil fuels, coal and petroleum, will ultimately be exhauste.

  1. True

  2. False

  3. Nither

  4. Either
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The fossil fuels, coal and petroleum will ultimately exhaust because these are non-renewable natural resources. They are not replenished by nature and once used, they are lost forever. It takes a very long time for their formation. Petroleum is produced from crude oil which takes million of years to form in the earth from the dead remains of plants and animals. Similarly, coal and fossil fuels also form in this way in million of years. Hence, they will ultimately get exhausted as the demand for these resources is increasing.
Hence, the statement given in the question is correct.
So, the correct answer is 'True'.