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Coal and Petroleum — Class 8 CBSE Science MCQs with Solutions
Free Class 8 CBSE Science Coal and Petroleum MCQs with step-by-step solutions covering Exhaustible & inexhaustible resources, Coal, Petroleum & natural gas. Practise online on Prepizo — no login needed.
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Sample questions with solutions
Q1 — Exhaustible & inexhaustible resources · easy · theory
What are natural resources?
A. Materials obtained from nature, such as air, water, soil and minerals ✓ Correct
B. Materials made only inside factories
C. Materials that can be prepared only in a laboratory
D. Materials imported from other countries
Solution: Natural resources are materials we get from nature, such as air, water, soil and minerals.
Q2 — Exhaustible & inexhaustible resources · easy · theory
Which of the following is an inexhaustible natural resource?
A. Sunlight ✓ Correct
B. Coal
C. Petroleum
D. Natural gas
Solution: Sunlight is present in unlimited quantity and is not likely to be exhausted, so it is inexhaustible, while coal, petroleum and natural gas are exhaustible.
Q3 — Exhaustible & inexhaustible resources · easy · theory
Inexhaustible natural resources are those that are present in
A. unlimited quantity and are not likely to be exhausted by human activities ✓ Correct
B. a very small, limited quantity
C. deposits found only under the sea
D. deposits found only between rocks
Solution: Inexhaustible resources like sunlight and air are available in unlimited amounts and are not likely to be used up by human activities.
Q4 — Exhaustible & inexhaustible resources · easy · theory
Forests, wildlife, minerals, coal and petroleum are all examples of
A. exhaustible natural resources ✓ Correct
B. inexhaustible natural resources
C. man-made resources
D. unlimited resources
Solution: These resources are limited in amount and can be used up by human activities, so they are called exhaustible natural resources.
Q5 — Exhaustible & inexhaustible resources · easy · theory
Coal, petroleum and natural gas are together known as
A. fossil fuels ✓ Correct
B. inexhaustible fuels
C. petrochemicals
D. refinery products
Solution: Coal, petroleum and natural gas were formed from the dead remains of living organisms (fossils), so they are called fossil fuels.
Q6 — Exhaustible & inexhaustible resources · easy · theory
Fossil fuels such as coal and petroleum were formed from the
A. dead remains of living organisms ✓ Correct
B. rocks lying under the sea
C. gases present in the air
D. minerals dissolved in soil
Solution: Fossil fuels are formed from the dead remains of living organisms (fossils), which is why they are called fossil fuels.
Q7 — Coal · easy · theory
What is the colour of coal?
A. Black ✓ Correct
B. White
C. Bright yellow
D. Green
Solution: Coal is black in colour and as hard as stone.
Q8 — Coal · easy · theory
Coal is described as being as hard as which of the following?
A. Stone ✓ Correct
B. Cotton
C. Rubber
D. Wax
Solution: Coal is as hard as stone.
Q9 — Coal · easy · theory
Coal is made up mainly of which element?
A. Carbon ✓ Correct
B. Oxygen
C. Nitrogen
D. Hydrogen
Solution: Coal contains mainly carbon.
Q10 — Coal · easy · theory
When coal is heated and burnt in air, which gas is mainly produced?
A. Carbon dioxide ✓ Correct
B. Oxygen
C. Hydrogen
D. Nitrogen
Solution: On burning in air, coal produces mainly carbon dioxide gas.
Q11 — Coal · easy · theory
The slow process by which dead vegetation is converted into coal is called:
A. Carbonisation ✓ Correct
B. Refining
C. Distillation
D. Extraction
Solution: The slow conversion of dead vegetation into coal is called carbonisation.
Q12 — Coal · easy · theory
Coke is an almost pure form of which substance?
A. Carbon ✓ Correct
B. Sulphur
C. Iron
D. Hydrogen
Solution: Coke is a tough, porous, black substance that is an almost pure form of carbon.
Q13 — Coal · easy · theory
Naphthalene balls, used to repel moths and insects, are obtained from which product of coal?
A. Coal tar ✓ Correct
B. Coke
C. Coal gas
D. Petrol
Solution: Naphthalene balls are obtained from coal tar.
Q14 — Coal · easy · theory
In thermal power plants, coal is burnt to produce:
A. Electricity ✓ Correct
B. Plastic
C. Steel
D. Fertiliser
Solution: Coal is used in thermal power plants to produce electricity.
Q15 — Coal · easy · theory
Earlier, coal was used in railway engines to produce ______ to run the engine.
A. Steam ✓ Correct
B. Electricity
C. Petrol
D. Diesel
Solution: Coal was earlier used in railway engines to produce steam that ran the engine.
Q16 — Coal · easy · theory
Which set correctly lists the three useful products obtained by processing coal?
A. Coke, coal tar and coal gas ✓ Correct
B. Petrol, diesel and kerosene
C. LPG, CNG and bitumen
D. Wax, grease and lubricating oil
Solution: Processing coal in industry gives coke, coal tar and coal gas.
Q17 — Coal · easy · theory
Coal tar is best described as:
A. A black, thick liquid with an unpleasant smell ✓ Correct
B. A clear, odourless gas
C. A white waxy solid
D. A light, sweet-smelling oil
Solution: Coal tar is a black, thick liquid with an unpleasant smell.
Q18 — Coal · easy · theory
Coal is correctly classified as a:
A. Fossil fuel ✓ Correct
B. Inexhaustible resource
C. Man-made fuel
D. Metal
Solution: Coal was formed from the dead remains of organisms, so it is a fossil fuel.
Q19 — Petroleum & natural gas · easy · theory
Petrol is used as a fuel mainly in which type of vehicles?
A. Light automobiles such as motorcycles, scooters and cars ✓ Correct
B. Heavy vehicles such as trucks and tractors
C. Railway steam engines
D. Thermal power plants
Solution: Petrol, obtained from petroleum, is the fuel used in light automobiles like motorcycles, scooters and cars.
Q20 — Petroleum & natural gas · easy · theory
The word 'petroleum' is made from two words meaning:
A. Rock and oil ✓ Correct
B. Sea and oil
C. Fire and stone
D. Gas and water
Solution: 'Petroleum' comes from petra (rock) and oleum (oil), because it is mined from between the rocks under the Earth.
Q21 — Petroleum & natural gas · easy · theory
Diesel is commonly used as a fuel in:
A. Heavy motor vehicles such as trucks and tractors ✓ Correct
B. Motorcycles and scooters
C. Kerosene lamps
D. Home cooking stoves
Solution: Diesel, obtained from petroleum, is the fuel used to run heavy vehicles such as trucks and tractors.
Q22 — Petroleum & natural gas · easy · theory
Because of its great commercial importance, petroleum is often called:
A. Black gold ✓ Correct
B. Black diamond
C. Blue fuel
D. White gold
Solution: Due to its great commercial value, petroleum is popularly known as 'black gold'.
Q23 — Petroleum & natural gas · easy · theory
CNG stands for:
A. Compressed Natural Gas ✓ Correct
B. Coal Natural Gas
C. Compressed Nitrogen Gas
D. Cooking Natural Gas
Solution: Natural gas stored under high pressure is called Compressed Natural Gas (CNG).
Q24 — Petroleum & natural gas · easy · theory
The process of separating the various constituents of petroleum is called:
A. Refining ✓ Correct
B. Carbonisation
C. Compression
D. Extraction
Solution: Refining is the process of separating the various fractions of petroleum, carried out in a petroleum refinery.
Q25 — Petroleum & natural gas · easy · theory
Kerosene obtained from petroleum is used as a fuel for:
A. Stoves, lamps and jet aircraft ✓ Correct
B. Heavy trucks and tractors
C. Making candles and vaseline
D. Surfacing roads
Solution: Kerosene is used as fuel for stoves, lamps and for jet aircraft.
Q26 — Petroleum & natural gas · easy · theory
Petroleum gas in liquid form (LPG) is mainly used as:
A. A fuel for home and industry ✓ Correct
B. A lubricant for machines
C. A solvent for dry cleaning
D. A material for road surfacing
Solution: LPG (liquefied petroleum gas) is used as a fuel in homes and industry.
Q27 — Petroleum & natural gas · easy · theory
Paraffin wax, a constituent of petroleum, is used to make:
A. Ointments, candles and vaseline ✓ Correct
B. Synthetic dyes and explosives
C. Fertilisers and detergents
D. Steel and metals
Solution: Paraffin wax is used to make ointments, candles and vaseline.
Q28 — Petroleum & natural gas · easy · theory
Which of these best describes petroleum?
A. A dark, oily liquid with an unpleasant odour and a mixture of many constituents ✓ Correct
B. A hard, black solid as hard as stone
C. A colourless, odourless gas
D. A pure single substance, not a mixture
Solution: Petroleum is a dark, oily liquid with an unpleasant odour and is a mixture of constituents like petrol, diesel and lubricating oil.
Q29 — Petroleum & natural gas · easy · theory
In India, petroleum (oil) is found in which of the following places?
A. Assam, Gujarat and Mumbai High ✓ Correct
B. Tripura and Rajasthan only
C. Pennsylvania and Makum
D. Vadodara and Delhi pipelines
Solution: In India, oil is found in Assam, Gujarat, Mumbai High, and the river basins of Godavari and Krishna.
Q30 — Petroleum & natural gas · easy · theory
Petroleum was formed from the dead remains of organisms that lived in the:
A. Sea ✓ Correct
B. Dense forests on land
C. Low-lying wetlands
D. Deep mines
Solution: Petroleum was formed from organisms living in the sea whose dead bodies settled at the sea bottom and were transformed over millions of years.