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Arrange the following in the decreasing order of their boiling points:

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Arrange the following in the decreasing order of their boiling points:

(i)  C9H20

(ii)  C8H18

(A) (I) > (II) > (III) < (IV)

(B) (IV) > (III) > (II) < (I)

(C) (I) > (II) > (IV) < (III)

(D) (III) > (IV) > (II) < (I)

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1 Answer

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Best answer

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

Explanation:

The greater the number of C atoms and straight chain, the higher is the boiling point. So, I is greater than II. More is the branching, less is the surface area, so lower is the boiling point. Therefore, III is greater than IV.

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