Hydrocarbons Question 179

Question: Which of the following has highest knocking property

Options:

A) Aromatic hydrocarbons

B) Olefins

C) Branched chain paraffins

D) Straight chain paraffins

Show Answer

Answer:

Correct Answer: D

Solution:

Octane number increases in the order Straight chain alkanes < Branched chain alkanes < Olefins < Cyclo alkanes < Aromatic compounds Since, straight chain alkane has minimum octane number.

Hence, it produces maximum knocking.

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