1.

Which of the following element has 100% anti knocking?

A. 2-methyl naphthalene
B. heptadecane
C. CH<sub>3</sub>-(-CH<sub>2</sub>-)<sub>14</sub>-CH<sub>3</sub>
D. 3-methyl naphthalene
Answer» D. 3-methyl naphthalene


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