Question

Which one of the following is a trihydric alcohol containing only secondary hydroxyl group?

• A.
• B.
• C.
• D. None of the above

Answer 1

Answer: (C)

$1^{\circ }$ carbon atom has only alkyl group attached to it. $2^{\circ }$ carbon atom has $2$ alkyl group attached to it. $3^{\circ }$ carbon atom has $3$ alkyl group attached to it.

$\therefore$ it has $1,2,3^{\circ }$ hydroxyl groups.

$\therefore$ It has $1^{\circ }$ and $2^{\circ }$ hydroxyl gas.

$\therefore$ it has all $2^{\circ }$ hydroxyl group.