Multiple choice general knowledge science & technology

Tetraethyl lead is used as

  1. pain killer

  2. fire extinguisher

  3. mosquito repellent

  4. petrol additive
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tetraethyl lead (TEL) was historically used as an additive in petrol (gasoline) to improve octane rating and prevent engine knocking. It's an organolead compound that was phased out due to environmental and health concerns.

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