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The alkane that gives only one mono-chloro product on chlorination with Cl2 in presence of diffused sunlight is

1. Isopentane
2. 2,2-dimethylbutane
3. neopentane
4. n-pentane

Correct answer: neopentane

Solution

Neopentane (C) has all its hydrogen atoms equivalent due to its symmetrical structure, so chlorination produces only one mono-chloro product.

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