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Which of the following compound is added to the petrol engine to overcome the problems caused by tetra ethyl lead (TEL)?

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Which of the following compound is added to the petrol engine to overcome the problems caused by tetra ethyl lead (TEL)?

(a) Methylene dibromide

(b) Ethylene dibromide

(c) Propylene dibromide

(d) Butylene dibromide

I have been asked this question in semester exam.

The doubt is from Anti Knocking Agents topic in division Fuels and Combustion of Engineering Chemistry II

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Correct option is (b) Ethylene dibromide

For explanation: Lead is formed as the final product after adding TEL in the petrol engine which is kind of hazardous in nature. To overcome this problem ethylene dibromide is added to the petrol engine so that the product obtained is lead bromide, which is swept out with the exhaust gases.

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