Question

Which of the following compound
readily knock under IC engine?
O
a) 2-ethly butane
O b) n-heptane
O c) benzene
O d) toluene​

Answer 1

Answer:

B

Explanation:

n-heptane is a straight chain hydrocarbon which knocks readily and hence its octane number is zero. Presence of straight chain hydrocarbon in gasoline reduces its rate of combustion..

hope it helps