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Fuel technology: Tetraethyl lead (TEL) is used as what? Recall its historical role in internal combustion engines. Choose the correct application.

Difficulty: Easy

Correct Answer: Petrol additive (antiknock agent)

Explanation:


Given data

  • Chemical: Tetraethyl lead (TEL).


Concept/Approach
TEL was historically added to gasoline as an antiknock agent to raise octane and reduce engine knocking. Its use has been largely phased out due to toxicity and environmental impact.


Final Answer
Petrol additive (antiknock agent)

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