Glycerol is a

Classify the following as primary,secondary,and tertiary alcohols:
$(i)$ $CH_3-C(CH_3)_2-CH_2OH$
$(ii)$ $CH_2=CH-CH_2OH$
$(iii)$ $CH_3-CH_2-CH_2-OH$
$(iv)$ $C_6H_5-CH(OH)-CH_3$
$(v)$ $C_6H_5-CH_2-CH(OH)-CH_3$
$(vi)$ $C_6H_5-CH=CH-C(OH)(CH_3)_2$

$Crotonyl$ alcohol is an example of

Identify the functional group present in ethers from the following.

The common name of Benzene-$1, 2$-diol is:

What is the characteristic group of a secondary alcohol?