With reference to furnace oil, consider the following statements:<br/>1. It is a product of oil refineries.<br/>2. Some industries use it to generate power.<br/>3. Its use causes sulphur emissions into environment.<br/><br/>Which of the statements given above are correct?

1. It is a product of oil refineries. Furnace oil is a heavy residual fuel obtained during crude oil refining. Verdict: Correct.

2. Some industries use it to generate power. Furnace oil is used in boilers, furnaces, captive power plants and DG sets in some industries. Verdict: Correct.

3. Its use causes sulphur emissions into environment. Furnace oil generally has significant sulphur content, so burning it releases sulphur oxides (SOx). Verdict: Correct.

Hence, all three statements are correct.