🛢️ Coal and Petroleum – MCQs for Class 8 Science

Part 1: Q1 – Q25

Q1. Which of the following is NOT a natural resource?

A) Coal
B) Petroleum
C) Plastic
D) Natural gas

✅ Correct Answer: C) Plastic

Explanation:

• A) Coal – Natural resource from plants.
• B) Petroleum – Natural fossil fuel.
• C) Plastic – ✔ Man-made material from petroleum.
• D) Natural gas – Natural fuel.

Q2. Which of the following is a fossil fuel?

A) Coal
B) Petroleum
C) Natural gas
D) All of these

✅ Correct Answer: D) All of these

Explanation:

• A) Coal – Fossil fuel.
• B) Petroleum – Fossil fuel.
• C) Natural gas – Fossil fuel.
• D) All of these – ✔ Correct.

Q3. Coal is formed from:

A) Dead animals
B) Dead plants
C) Minerals
D) Lava

✅ Correct Answer: B) Dead plants

Explanation:

• A) Dead animals – Form petroleum, not coal.
• B) Dead plants – ✔ Coal forms from buried plants over millions of years.
• C) Minerals – Not correct.
• D) Lava – Not related.

Q4. Petroleum is formed from:

A) Dead plants
B) Dead animals and plants
C) Only minerals
D) Coal

✅ Correct Answer: B) Dead animals and plants

Explanation:

• A) Dead plants – Only coal.
• B) Dead animals and plants – ✔ Petroleum forms from both under high pressure.
• C) Only minerals – Wrong.
• D) Coal – Different fossil fuel.

Q5. The destructive distillation of coal gives:

A) Coke, coal tar, coal gas
B) Petroleum, LPG, natural gas
C) Kerosene, diesel, petrol
D) Coke, diesel, wax

✅ Correct Answer: A) Coke, coal tar, coal gas

Explanation:

• A) ✔ Correct – Coal heated without air gives coke, tar, gas.
• **B) Petroleum products, not coal.
• **C) Petroleum refining, not coal.
• **D) Mix of wrong options.

Q6. Coke is mainly composed of:

A) Carbon
B) Hydrogen
C) Oxygen
D) Nitrogen

✅ Correct Answer: A) Carbon

Explanation:

• A) Carbon – ✔ Coke is almost pure carbon.
• B) Hydrogen – Found in hydrocarbons.
• C) Oxygen – Not main component.
• D) Nitrogen – Not present in large amounts.

Q7. Which of these is used as a reducing agent in steel manufacturing?

A) Coal gas
B) Coke
C) Coal tar
D) LPG

✅ Correct Answer: B) Coke

Explanation:

• A) Coal gas – Used as fuel.
• B) Coke – ✔ Reducing agent in steel industry.
• C) Coal tar – By-product, chemicals.
• D) LPG – Fuel.

Q8. Which of these fuels is cleaner?

A) Coal
B) Petroleum
C) LPG
D) Wood

✅ Correct Answer: C) LPG

Explanation:

• A) Coal – Produces smoke.
• B) Petroleum – Cleaner than coal, not as clean as LPG.
• C) LPG – ✔ Burns with little residue.
• D) Wood – Produces smoke.

Q9. Petroleum refining means:

A) Purifying water
B) Separation of petroleum into fractions
C) Coal mining
D) Making plastic

✅ Correct Answer: B) Separation of petroleum into fractions

Explanation:

• A) Purifying water – Unrelated.
• **B) ✔ Refining separates petroleum into petrol, diesel, kerosene, etc.
• C) Coal mining – Not petroleum.
• D) Making plastic – Uses petroleum, not refining.

Q10. Which fraction of petroleum is used in road surfacing?

A) Diesel
B) Kerosene
C) Bitumen
D) Petrol

✅ Correct Answer: C) Bitumen

Explanation:

• A) Diesel – Vehicle fuel.
• B) Kerosene – Cooking/lighting fuel.
• C) Bitumen – ✔ Used in surfacing roads.
• D) Petrol – Vehicle fuel.

Q11. Which of these is NOT obtained from petroleum?

A) LPG
B) Diesel
C) Coal tar
D) Kerosene

✅ Correct Answer: C) Coal tar

Explanation:

• A) LPG – From petroleum refining.
• B) Diesel – From petroleum.
• C) Coal tar – ✔ From coal, not petroleum.
• D) Kerosene – Petroleum fraction.

Q12. Which of the following is a non-renewable resource?

A) Sunlight
B) Wind
C) Coal
D) Water

✅ Correct Answer: C) Coal

Explanation:

• A) Sunlight – Renewable.
• B) Wind – Renewable.
• C) Coal – ✔ Non-renewable, limited supply.
• D) Water – Renewable (if conserved).

Q13. The main component of natural gas is:

A) Methane
B) Ethane
C) Butane
D) Propane

✅ Correct Answer: A) Methane

Explanation:

• A) Methane – ✔ Major component of natural gas.
• B) Ethane – Present in small amounts.
• C) Butane – LPG component, not main NG component.
• D) Propane – Same as above.

Q14. Which is used for producing electricity in thermal power plants?

A) Wood
B) Coal
C) LPG
D) CNG

✅ Correct Answer: B) Coal

Explanation:

• A) Wood – Not used in large scale.
• B) Coal – ✔ Burnt in thermal power plants.
• C) LPG – Domestic use.
• D) CNG – Vehicles.

Q15. Which fuel is used in jet airplanes?

A) Diesel
B) Petrol
C) Kerosene
D) LPG

✅ Correct Answer: C) Kerosene

Explanation:

• A) Diesel – For trucks/cars.
• B) Petrol – Cars, scooters.
• C) Kerosene – ✔ Jet fuel.
• D) LPG – Domestic cooking.

Q16. Which of the following is NOT a fossil fuel?

A) Coal
B) Natural gas
C) Petrol
D) Hydrogen gas

✅ Correct Answer: D) Hydrogen gas

Explanation:

• A) Coal – Fossil fuel.
• B) Natural gas – Fossil fuel.
• C) Petrol – Fossil fuel.
• D) Hydrogen gas – ✔ Clean fuel, not fossil.

Q17. Which is the most eco-friendly fuel?

A) CNG
B) Diesel
C) Coal
D) Petrol

✅ Correct Answer: A) CNG

Explanation:

• A) CNG – ✔ Produces least pollution.
• B) Diesel – Polluting.
• C) Coal – Very polluting.
• D) Petrol – Less than coal, but not as clean as CNG.

Q18. The main use of coke is in:

A) House cooking
B) Steel industry
C) Making roads
D) Power generation

✅ Correct Answer: B) Steel industry

Explanation:

• A) House cooking – Not used.
• **B) ✔ Coke used as reducing agent in steel plants.
• C) Roads – Bitumen is used.
• D) Power generation – Coal is used.

Q19. Which of the following is NOT a petroleum product?

A) Petrol
B) Diesel
C) Coal gas
D) Kerosene

✅ Correct Answer: C) Coal gas

Explanation:

• A) Petrol – Petroleum fraction.
• B) Diesel – Petroleum fraction.
• C) Coal gas – ✔ Obtained from coal, not petroleum.
• D) Kerosene – Petroleum fraction.

Q20. Which of these is a non-renewable fossil fuel?

A) Coal
B) Solar energy
C) Wind energy
D) Water

✅ Correct Answer: A) Coal

Explanation:

• A) Coal – ✔ Limited, non-renewable.
• B) Solar – Renewable.
• C) Wind – Renewable.
• D) Water – Renewable if conserved.

Q21. Petroleum is commonly called:

A) Black diamond
B) Black gold
C) Brown diamond
D) Earth gold

✅ Correct Answer: B) Black gold

Explanation:

• A) Black diamond – Refers to coal.
• B) Black gold – ✔ Valuable resource → petroleum.
• C) Brown diamond – Not used.
• D) Earth gold – Not used.

Q22. Which country has the maximum petroleum reserves?

A) India
B) Saudi Arabia
C) USA
D) China

✅ Correct Answer: B) Saudi Arabia

Explanation:

• A) India – Imports petroleum.
• B) Saudi Arabia – ✔ Largest reserves.
• C) USA – Produces a lot, but not the largest reserves.
• D) China – Not largest.

Q23. Which fuel is filled in cylinders for home cooking?

A) CNG
B) LPG
C) Kerosene
D) Petrol

✅ Correct Answer: B) LPG

Explanation:

• A) CNG – Vehicles.
• B) LPG – ✔ Domestic cooking fuel.
• C) Kerosene – Used in stoves, not cylinders.
• D) Petrol – Vehicles.

Q24. Which is the major component of LPG?

A) Methane
B) Butane
C) Ethane
D) Propane

✅ Correct Answer: B) Butane

Explanation:

• A) Methane – CNG.
• B) Butane – ✔ Main component of LPG.
• C) Ethane – Small amounts only.
• D) Propane – Also present, but less than butane.

Q25. Which by-product of coal is used in making dyes and explosives?

A) Coal tar
B) Coal gas
C) Coke
D) Petrol

✅ Correct Answer: A) Coal tar

Explanation:

• A) Coal tar – ✔ Produces dyes, drugs, explosives.
• B) Coal gas – Used as fuel.
• C) Coke – Reducing agent.
• D) Petrol – Petroleum product.

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