STD 12 - 7. Alcohol, phenol and ethers — NEET STD 11 Science — Question

$(ii)$ Functional isomers have different functional groups

$(iii)$ Homologous are represented by same general formula and two successive

homologous differ by $CH _2$

$(iv)$ Position isomers differ in position of double bond or triple bond or functional group

$\underset{\text { dimethyl ether }}{ CH _3- O - CH _3} \quad CH _3 CH _2 OH$

Dimethyl ether and ethyl alcohol have same formula but different functional groups.

$\therefore$ They are functional isomers.