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Solution


Q.

The alkane that gives only one monochloro product on chlorination with Cl2 in presence of diffused sunlight is               [2019]
1 2,2-dimethylbutane  
2 neopentane  
3 n-pentane  
4 isopentane  

Ans.

(2)

In chlorination of alkanes, hydrogen is replaced by chlorine. In neo-pentane, only one type of hydrogen is present, hence replacement of any hydrogen atom will give the same product.