Alcohols are isomeric with which of the following?

The $IUPAC$ name of $CH_3-CH_2-O-CH_2-CH(CH_3)_2$ is

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

The characteristic grouping of secondary alcohols is

Which of the following is known as carbolic acid?

Catechol and $m$-cresol respectively are