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 zoology bio-geo chemical cycles in nature nutrient cycles- flow of substances carbon cycle biogeochemical cycles - gaseous

Chemical reactions triggered by ___________ transforms the organic material into hydrocarbons.

  1. solar energy

  2. hydroelectric

  3. elevated temperatures

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

The formation of hydrocarbons from organic matter (kerogen) in sedimentary rocks occurs through a process called catagenesis, which is driven by elevated temperatures and pressures over geological time.

Multiple choice chemistry chemical bond and chemical equation properties of covalent compounds types of bonds and properties covalent bond

Which of the following is used as lubricant ?

  1. Graphite

  2. Charcoal

  3. Diamond

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

Graphite is a mineral made of loosely bonded sheets of carbon atoms, giving it a slippery texture that makes it a very effective lubricant. This slippery quality also makes graphite a good material for pencil lead because it easily sloughs off onto paper.

Multiple choice evs sources of water conservation of natural and energy resources energy conservation and sources reduce, recycle, reuse importance of the conservation of natural resources

Match the following.

(i) Oil reserve lasts for (a) $252$ years 
(ii) Gas reserves lasts for (b) $45$ years
(iii) Coal reserves lasts for (c) $72$ years

  1. i-b, ii-c, iii-a

  2. i-c, ii-b, iii-a

  3. i-a, ii-b, iii-c

  4. i-a, ii-c, iii-b
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Based on standard environmental science data often cited in textbooks: Oil reserves are estimated to last about 45 years, gas reserves about 72 years, and coal reserves about 252 years.

Multiple choice evs wonderful world of bholu aquatic habitat life inside water animal and habitat animals- nature's gift food material and source

Petrolatum is

  1. Animal wax

  2. Petroleum jelly

  3. Hard paraffin wax

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

Petrolatum is soft paraffin wax. Waxes are esters of fatty acids with alcohol of high molecular weight instead of glycerol. They form water-insoluble coatings on hair and skin in animals and stems, leaves and fruits of plants.

Paraffin wax is obtained from petroleum. So, petrolatum is also known as petroleum jelly. It is used in cosmetics.
So, the correct answer is 'Petroleum jelly'.

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Fossil fuels are obtain from _____________.

  1. mineral ores

  2. rocks

  3. water

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Fossil fuels are obtained from sedimentary rocks and are formed under extreme temperature and pressure conditions.
  • When the fossil sediments get compressed into the rocks, with passing time there is the gradual decay of the fossils under extreme temperature and pressure which converts fossils into fossil fuels deep inside.
Multiple choice evs - i for a pollution free nature ways to prevent air pollution ways to reduce air pollution reducing air pollution

Which gas is emitted by the combustion of fossil fuels?

  1. $CO _2$
  2. $SO _2$
  3. $H _2S$
  4. $NO _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon dioxide is the major gas along with smaller amounts of methane and nitrous oxide which are emitted by the combustion of fossil fuels such as coal, oil, and natural gas and contribute to the major green house gases.

So, the correct answer is option A.

Multiple choice chemistry combustion and flame structure of flame flame combustion

Burning of coal and wood causes  _____________.

  1. pollution of air

  2. decrease of non-renewable source of energy

  3. both (a) and (b)

  4. neither (a) or (b).
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Burning of coal and wood causes air pollution and because of burning of coal and wood there is decrease in amount of non-renewable sources. 

Multiple choice chemistry combustion and flame structure of flame flame combustion

The zone of no combustion is _______.

  1. The middle zone

  2. Outermost zone

  3. The base of the flame

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

Innermost zone is the zone of no combustion. It is also called as dark zone which is formed around the wick of the candle flame.

Multiple choice chemistry combustion and flame structure of flame flame combustion

Substance which vaporize during burning gives ____________.

  1. sound

  2. flame

  3. combustion

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

Substances which vaporize during burning gives flame. For example, combustion of kerosene oil produces a flame. On the other hand, certain substances like coal do not vaporize and hence does not produce a flame.

Multiple choice economics environment pollution strategies to control environmental pollution strategies to control pollution strategies to control environmental pollution and green chemistry

Tetraethyl lead (TEL) in petrol was used as antiknocking agent, which creates lead pollution. In order to avoid lead pollution, the substitute of TEL is used in unleaded-petrol. The substitute is denoted as: 

  1. $AK-33-X$
  2. $BK-33-X$
  3. $CK-33-X$
  4. $DK-33-X$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AK-33-X is a known commercial additive used as an antiknock agent in unleaded petrol to replace the toxic Tetraethyl lead.

Multiple choice economics environment pollution strategies to control environmental pollution strategies to control pollution strategies to control environmental pollution and green chemistry

The fuel obtained by decomposing sludge is:

  1. biogas

  2. petrol

  3. diesel

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

The gas obtained by decomposing sludge is Biogas (methane and carbon dioxide). Decomposition of sludge products methane and carbon dioxide which is then stored and supplied as biogas for various household processes and other commercial processes.

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Diatomaceous earth is used for all except

  1. polishing

  2. filtration of offs and syrups

  3. making sound and fire proof rooms

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

 The cell walls of diatoms are embedded with silica and thus the walls are indestructible. Thus, diatoms have left behind a large number of cell deposits in their habitat; this accumulation over billions of years is referred to as 'diatomaceous earth'. Being gritty this soil is used in polishing, filtration of oils and syrups.

So the correct option is "biogas production".

Multiple choice chemistry materials around us and different types of houses materials around us matter and its states different states of matter

The combustion of candles, containing paraffin wax, to carbon dioxide and water vapor is:

  1. sublimation as well as chemical reaction with oxygen

  2. only sublimation

  3. not sublimation but a chemical reaction with oxygen

  4. none of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The term sublimation refers to a physical change of state and is not used to describe transformation of a solid to a gas in a chemical reaction. The combustion of candles, containing paraffin wax, to carbon dioxide and water vapor is not sublimation but a chemical reaction with oxygen.