With reference to furnace oil, consider the following statements : 1. It is a product of oil refineries. 2. Some industries use it to generate power. 3. Its use causes sulphur emissions into environment. Which of the statements given above are correct?
- A.1 and 2 only
- B.2 and 3 only
- C.1 and 3 only
- D.1, 2 and 3
Correct answer
Explanation
The correct answer is D, 1, 2 and 3. Furnace oil is a heavy refinery product, it is burnt by industry for heat and power, and its high sulphur content makes it a polluting fuel.
Furnace oil is a dark, viscous residual fuel left after lighter fractions such as petrol, kerosene and diesel are distilled off crude oil in a refinery. Because it is cheap and rich in energy, industries burn it in boilers, furnaces and captive power plants, and ships use similar heavy fuel oil. It carries a large share of the crude's sulphur, so burning it releases sulphur dioxide, a cause of acid rain and respiratory illness. For this reason the Supreme Court and pollution boards have restricted furnace oil and pet coke in the Delhi region.
A is wrong: it leaves out statement 3, though sulphur emission is a well-known problem of furnace oil.
B is wrong: it leaves out statement 1, though furnace oil is a refinery product.
C is wrong: it leaves out statement 2, though industries do use it to generate power.
Exam tip: furnace oil = heavy residue of refining, used in boilers and captive power, high in sulphur (SO2).
Practice Questions
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1. Hedgehog
2. Marmot
3. Pangolin
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- A.1 and 2
- B.2 only
- C.3 only
- D.1 and 3
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- D.Rheostat
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- C.83 u
- D.53 u
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- A.Bauxite
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- C.Feldspar
- D.Pitchblende
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