Positional isomerism also called as:

enantiomers

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regioisomers

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both

A

and

B

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none of these

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Solution

The correct option is A regioisomers
Positional isomerism is also called as regioisomerism. Positional isomerism is a type of structural isomerism..Positional isomers have same molecular formula, but they differ in the position of the functional group.

Thus, 1-hexanol ( $C H_{3} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - O H$ ),

2-hexanol ( $C H_{3} - C | O H H - C H_{2} - C H_{2} - C H_{2} - C H_{3}$ )

and 3-hexanol ( $C H_{3} - C H_{2} - C | O H H - C H_{2} - C H_{2} - C H_{3}$ ) are positional isomers.

They differ in the position of $- O H$ group.

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Which of the following is position isomer of
$C H_{3} - C H_{2} - C H = C H_{2}$ :

c i s - t r a n s

Chain isomer of

$C H_{3} - C H_{2} - O | | C - C H_{2} - C H_{3}$ is

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