1.

Given the number of N and M

Answer»

6, 6
6, 4
4, 4
3, 3

Solution :
A TOTAL of 6 isomers will be FORMED. Since enatiomers have same b.p., they cannot be separeted by fractional distillation, i.e., (i) and (ii) will DISTILL together. Thus out of 6 isomers formed , four can be separated by fractional distillation.


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