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Which of the following can be used as anti-knocking agent ?

Correct answer: B. (C2H5)4 Pb

  • A. PbCl2
  • B. (C2H5)4 Pb
  • C. (C2H5)2 Pb
  • D. all of the above

Explanation

Tetraethyl lead, (C2H5)4Pb, was historically added to petrol to increase octane rating and reduce engine knocking. PbCl2 and diethyl lead are not the standard anti-knocking additive referred to in this question. The likely mistake is choosing all options because each contains lead, although the specific compound matters.

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About Alkanes

Alkanes are saturated hydrocarbons containing only carbon-carbon and carbon-hydrogen single bonds, with the general formula CnH2n+2 for open chains. Their structure, isomerism, IUPAC nomenclature, physical properties, combustion, free-radical halogenation and conformations are covered, including the difference between substitution in alkanes and addition in unsaturated hydrocarbons.

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