Question
Question: Which of the following has highest knocking property....
Which of the following has highest knocking property.
A
Aromatic hydrocarbons
B
Olefins
C
Branched chain paraffins
D
Straight chain paraffins
Answer
Straight chain paraffins
Explanation
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.