Q.

A hydrocarbon X has molar mass 84 but contain no double or triple bonds. Also X has no methyl locant. How many different IUPAC name can be assigned to X?

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a

4

b

3

c

2

d

6

answer is A.

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Detailed Solution

Molar mass 84 is a multiple of 14 hence, X is based on general formula CnH2n with molar mass 14n. Here, n is 6 and X is C6H12. As X gas no double bond, it must be a cycloalkane. Cycloalkanes without methyl as locant are
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