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Question

The correct order of boiling point of 1,2,3 alcohol is:

A
1>2>3
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B
3>2>1
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C
2>1>3
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D
2>3>1
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Solution

The correct option is A 1>2>3
The presence of OH groups in a compound leads to Hydrogen-bonding which greatly increases its boiling. Generally, the more 'exposed' the OH group, the better it can participate in intermolecular H-bonding and thus, the boiling point will elevate. By that logic, primary alcohols will have the highest boiling point while tertiary alcohols will have the lowest boiling point.
1°>2°>3°
Hence, Option A is correct.

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