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in Chemistry by (61.3k points)

The decreasing order of the anti-knocking value of octane number of the following is

(I) CH4 

(II) C2 H6 

(III) C3 H8 

(IV)  C4 H10 

(A)  (I) > (II) > (III) > (IV)

(B)  (IV) > (III) > (II) > (I) 

(C)  (I) > (III) > (II) > (IV) 

(D)  (IV) > (II) > (III) > (I)

1 Answer

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Best answer

Correct option  (A) (I) > (II) > (III) > (IV)

Explanation:

As the number of C atoms increases, knocking power increases or anti-knocking power decreases. 

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