Which of the following has highest knocking property - Vidyadip

MCQ

Which of the following has highest knocking property

A
Aromatic hydrocarbons
B
Olefins
C
Branched chain paraffins
✓
Straight chain paraffins

✓

Answer

Correct option: D.

Straight chain paraffins

d
(d) 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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