Coal and Petroleum Part 2: MCQs (Q26–Q50)
🛢️ Coal and Petroleum – MCQs for Class 8 Science
Part 2: Q26 – Q50
Q26. Which product of petroleum is used as fuel for heavy motor vehicles?
A) Petrol
B) Diesel
C) Kerosene
D) LPG
✅ Correct Answer: B) Diesel
Explanation:
- A) Petrol – Used in scooters and cars.
- B) Diesel – ✔ Used in trucks, buses, tractors.
- C) Kerosene – Used in lamps and stoves.
- D) LPG – Used in domestic cooking.
Q27. Which of these is a natural resource but not a fossil fuel?
A) Coal
B) Petroleum
C) Natural gas
D) Sunlight
✅ Correct Answer: D) Sunlight
Explanation:
- A, B, C – All are fossil fuels.
- D) Sunlight – ✔ Renewable natural resource, not fossil fuel.
Q28. Which of these is obtained by destructive distillation of coal?
A) Coke
B) Coal tar
C) Coal gas
D) All of these
✅ Correct Answer: D) All of these
Explanation:
- A) Coke – ✔ Solid residue.
- B) Coal tar – ✔ Thick black liquid.
- C) Coal gas – ✔ Gaseous fuel.
- D) All of these – ✔ Correct.
Q29. The main constituent of CNG is:
A) Propane
B) Methane
C) Butane
D) Ethane
✅ Correct Answer: B) Methane
Explanation:
- A, C, D – Present in small amounts.
- B) Methane – ✔ Major component of CNG.
Q30. Which is NOT a petroleum fraction?
A) Diesel
B) Petrol
C) Coal tar
D) Kerosene
✅ Correct Answer: C) Coal tar
Explanation:
- A, B, D – All are fractions of petroleum.
- C) Coal tar – ✔ By-product of coal, not petroleum.
Q31. Which of these fuels pollutes the environment the most?
A) Coal
B) CNG
C) LPG
D) Natural gas
✅ Correct Answer: A) Coal
Explanation:
- A) Coal – ✔ Produces smoke, CO₂, SO₂ → major pollution.
- B) CNG – Clean fuel.
- C) LPG – Cleaner than coal.
- D) Natural gas – Cleaner fuel.
Q32. Petroleum is found in:
A) Rocks mixed with water and natural gas
B) Solid rocks only
C) Inside trees
D) Coal mines
✅ Correct Answer: A) Rocks mixed with water and natural gas
Explanation:
- A) ✔ Petroleum occurs in porous rocks with water and natural gas.
- B) Solid rocks – Incorrect.
- C) Trees – Give resins, not petroleum.
- D) Coal mines – Contain coal, not petroleum.
Q33. Which of the following is NOT a use of coal tar?
A) Road surfacing
B) Making perfumes
C) Making explosives
D) Manufacturing dyes
✅ Correct Answer: B) Making perfumes
Explanation:
- A, C, D – Correct uses of coal tar.
- B) Perfumes – ✔ Not made from coal tar.
Q34. Which fraction of petroleum is used in dry cleaning?
A) Kerosene
B) Petrol
C) Diesel
D) Naphtha
✅ Correct Answer: D) Naphtha
Explanation:
- A) Kerosene – Fuel, not for dry cleaning.
- B) Petrol – Vehicle fuel.
- C) Diesel – Heavy vehicle fuel.
- D) Naphtha – ✔ Used as a solvent in dry cleaning.
Q35. Coal is also known as:
A) Black gold
B) Black diamond
C) Earth fuel
D) Rock fuel
✅ Correct Answer: B) Black diamond
Explanation:
- A) Black gold – Petroleum.
- B) Black diamond – ✔ Coal is often called this.
- C, D – Not used.
Q36. Which of the following is used as a domestic fuel?
A) Diesel
B) Petrol
C) LPG
D) Kerosene
✅ Correct Answer: C) LPG
Explanation:
- A, B – Used in vehicles.
- C) LPG – ✔ Common cooking fuel.
- D) Kerosene – Used in lamps/stoves, but not cylinders.
Q37. Natural gas is stored under high pressure as:
A) PNG
B) LPG
C) CNG
D) LNG
✅ Correct Answer: C) CNG
Explanation:
- A) PNG – Piped natural gas, supplied at low pressure.
- B) LPG – Petroleum gas.
- C) CNG – ✔ Compressed natural gas.
- D) LNG – Liquefied natural gas.
Q38. Which is NOT a disadvantage of coal?
A) Causes air pollution
B) Produces greenhouse gases
C) Non-renewable
D) Produces oxygen
✅ Correct Answer: D) Produces oxygen
Explanation:
- A, B, C – Real disadvantages.
- D) Produces oxygen – ✔ False, coal burning consumes oxygen.
Q39. Which gas is responsible for acid rain due to burning coal?
A) Oxygen
B) Carbon dioxide
C) Sulphur dioxide
D) Nitrogen
✅ Correct Answer: C) Sulphur dioxide
Explanation:
- A) Oxygen – Not harmful gas.
- B) CO₂ – Greenhouse gas, not acid rain.
- C) SO₂ – ✔ Causes acid rain.
- D) Nitrogen – Not main gas for acid rain.
Q40. Which of these is a non-renewable energy resource?
A) Wind
B) Water
C) Coal
D) Solar
✅ Correct Answer: C) Coal
Explanation:
- A, B, D – Renewable.
- C) Coal – ✔ Non-renewable.
Q41. The main component of petroleum gas is:
A) Butane
B) Ethane
C) Methane
D) Propane
✅ Correct Answer: A) Butane
Explanation:
- A) Butane – ✔ Main component.
- B, C, D – Present in small amounts.
Q42. Which product of petroleum is used in making candles and ointments?
A) Petrol
B) Wax
C) Diesel
D) Bitumen
✅ Correct Answer: B) Wax
Explanation:
- A, C, D – Fuels or construction material.
- B) Wax – ✔ From petroleum, used in candles, polishes, ointments.
Q43. Which by-product of coal is used for making naphthalene balls?
A) Coke
B) Coal tar
C) Coal gas
D) Petrol
✅ Correct Answer: B) Coal tar
Explanation:
- A) Coke – Reducing agent.
- B) Coal tar – ✔ Used to make naphthalene balls (moth repellant).
- C) Coal gas – Fuel.
- D) Petrol – Not from coal.
Q44. Which petroleum fraction is used in making Vaseline?
A) Bitumen
B) Petrol
C) Diesel
D) Paraffin wax
✅ Correct Answer: D) Paraffin wax
Explanation:
- A, B, C – Used as fuels.
- D) Paraffin wax – ✔ Used in ointments, Vaseline.
Q45. Which natural resource takes millions of years to form?
A) Coal
B) Solar energy
C) Wind energy
D) Water
✅ Correct Answer: A) Coal
Explanation:
- A) Coal – ✔ Fossil fuel, forms over millions of years.
- B, C, D – Renewable resources.
Q46. Which gas is a greenhouse gas produced from coal burning?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
✅ Correct Answer: B) Carbon dioxide
Explanation:
- A, C, D – Not greenhouse gases from coal.
- B) CO₂ – ✔ Major greenhouse gas.
Q47. Which of the following is NOT a product of petroleum refining?
A) Kerosene
B) Petrol
C) Diesel
D) Coal gas
✅ Correct Answer: D) Coal gas
Explanation:
- A, B, C – Petroleum products.
- D) Coal gas – ✔ From coal, not petroleum.
Q48. Which non-renewable resource is known as fossil fuel of the future?
A) Coal
B) Natural gas
C) Diesel
D) Petrol
✅ Correct Answer: B) Natural gas
Explanation:
- A, C, D – Already in use, polluting.
- B) Natural gas – ✔ Clean, efficient fuel.
Q49. Which petroleum fraction is used as aviation fuel?
A) Kerosene
B) Petrol
C) Diesel
D) LPG
✅ Correct Answer: A) Kerosene
Explanation:
- A) Kerosene – ✔ Jet fuel.
- B) Petrol – Cars, scooters.
- C) Diesel – Trucks, tractors.
- D) LPG – Domestic cooking.
Q50. The first oil well in the world was drilled in:
A) India
B) USA
C) Saudi Arabia
D) Russia
✅ Correct Answer: B) USA
Explanation:
- A) India – Asia’s first oil well was in Digboi, Assam.
- B) USA – ✔ World’s first oil well drilled in Pennsylvania, 1859.
- C) Saudi Arabia – Large reserves, not the first.
- D) Russia – Not the first.
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