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

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

I. Decane II. Nonane III. Octane IV. Heptane

(A)  (I) > (II) > (III) > (IV)

(B)  (IV) > (III) > (II) > (I)

(C)  (I) > (III) > (II) > (IV)

(D)  (IV) > (II) > (III) > (I)

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1 Answer

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Best answer

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

Explanation:

The melting point of even number of C atoms is greater than the next higher C atom (due to the alternation effect).

So, C10> C8 > C9 >C7

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