Multiple choice

Which of the following substances can increase the antiknocking property of petrol?

  1. Tetramethyl lead

  2. Tetraethyl Lead

  3. Trimethyl Lead

  4. Triethyl Lead

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A colourless, poisonous, oily liquid, Pb(C2H5)4, used in gasoline for internal-combustion engines as an antiknock agent.(TEL) a lead compound used as an additive to increase the octane rating and reduce the knock or detonation tendencies of gasoline. One gram of lead increases the octane of one gallon of gasoline to about 6 numbers. The EPA has phased down the use of lead in gasoline as it has been determined to be a health hazard. Lead has been prohibited in highway vehicle gasoline since January 1, 1996.

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