Question

One barrel of oil is approximately equivalent to how many litres?

• A. 200
• B. 150
• C. 120
• D. 160

Answer 1

The Correct Option is D

Step 1 — Recall the unit “barrel of oil”:
In the petroleum industry, crude oil and petroleum products are often measured in “barrels.” This is a traditional unit of volume that has been used internationally for oil trade and pricing.

Step 2 — Standard measurement of one barrel:
One standard barrel of crude oil is defined as 42 US gallons.
Now, 1 US gallon ≈ 3.785 litres.

Step 3 — Convert to litres:
42 × 3.785 = 158.97 litres (approximately).

Step 4 — Rounding to a simple figure:
Since 158.97 ≈ 159, and in general practice it is rounded further to 160 litres for simplicity in approximate conversions.

Step 5 — Conclusion:
Thus, one barrel of oil is approximately equivalent to 160 litres.

Final Answer:
The correct option is (D): 160.