Question

Arrange the following alcohols in the decreasing order of dehydration with conc. `H_(2)SO_(4)`.

A. `(ii)gt(iii)gt(iv)gt(i)`
B. `(i)gt(iv)gt(iii)gt(ii)`
C. `(iii)gt(ii)gt(iv)gt(i)`
D. `(i)gt(iv)gt(ii)gt(iii)`

Answer 1

Correct Answer - a.
ii. It has one `3^(@)C^(o+)` structure.
iii. It has one `3^(@)C^(o+)` structure.

`iv` It can rearrange to more stable `3^(@)C^(o+)`.
`i`. It has only one `2^(@)C^(o+)`.

So the decreasing order of dehydration is `:`
`(ii)gt(iii)gt(iv)gt(i).`