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

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

Which of the following is / are fossil fuels ?

  1. Coal

  2. Petroleum

  3. Natural gas

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

They all are fuels because they release heat energy when they are burned. They are fossil fuels because  they were formed from the remains of living organisms millions of years ago.

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

Energy source which do not evolve $CO _{2}$


  1. Oil

  2. Coke

  3. Nuclear energy

  4. Other organic substance
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The processes for which any CO2 is not evolved is :

  • all the forms of nuclear energy,
  • hydroelectricity (though dam reservoirs in the tropics might free a little methane, which is a greenhouse gas, because of the decaying of biological debris in the water),
  • sun rays,
  • wind,
  • tidal energy,
  • geothermal energy,
  • biomass if replanted.
  • So the correct option is C.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

Select correct answers :
(1) Flow of energy
(2) Flow of materials
(3) Flow information
(4) Flow of smoke

  1. 1, 2, 3 correct

  2. 1 and 2 correct

  3. 2 and 4 correct

  4. 1 and 3 correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecosystems are characterized by the flow of energy, the cycling of materials (nutrients), and the flow of information (e.g., biological signals). Smoke is not a standard component of ecosystem functional flow.

Multiple choice social studies importance of transport system importance of transportation system introduction to transport and communication transportation services language, writing and great books

Which of the following is a non-polluting fuel used in vehicles ____________.

  1. Petrol

  2. Diesel

  3. LPG

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

LPG (Liquefied Petroleum Gas) is considered a cleaner fuel compared to petrol or diesel, as it produces significantly fewer pollutants when burned in vehicle engines.

Multiple choice biology pictorial feature of plant kingdom uses of bryophytes introduction to bryophytes cryptogams

Peat is used at a fuel in some countries. Remains of which plant give rise to peat?

  1. Moss

  2. Ferns

  3. Angiosperms

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

Peat, also known as turf, is an accumulation of partially decayed vegetaation or organic matter.Sphagnum "moss", also called peat moss, is one of the most common components in peat, although many other plants can contribute.

So, the correct option is A. (moss)

Multiple choice biology pictorial feature of plant kingdom uses of bryophytes introduction to bryophytes cryptogams

Peat, obtained from Sphagnum moss, is used as ______________.

  1. Fuel

  2. Manure

  3. Corrosive

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

Peat consists of deposits of vegetable matter which have accumulated in bogs and swamps and slowly decomposed, becoming somewhat carbonised and compacted. It is dark brown in colour. Peat is built by Sphagnum moss, for this reason, Sphagnum is called peat moss. Peat is used as fuel and manure.

So the correct option is D.