Q. The substance which when added in a small proportion into petrol
reduces knocking is

(A) iso-butane
(B) n-heptane
(C) methyl nepthalene
(D) tetra ethyl lead

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✅ Correct Answer: (D) tetra ethyl lead

Published by Ram Sharma ⭐ 193.88K Points at 28-Dec-2022 09:12 pm in Automobile Engineering

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