Given two examples each for position and functional isomerism.

Explanation

Position isomerism : This type of isomerism arises due to the difference in the position of substituent group or in the position of multiple bond.
e.g.: `(CH _(3) - HC _(2) - CH _(2) - CH _(2 ) - Cl ) " " ("1- chloro butane")`
e.g.: `CH _(3) - CH _92) - C -= CH " " "1-butyne "`
`CH _(3) - C -= C - CH _(3) " " "2- butyne"`
Functional group isomerism : This type of isomerism arises in carbon compounds having the same molecular formula but with different functional groups.
e.g.: `CH _(3) - CH _(2) - CH _(2) - OH" " "1- proparal" (C_(3) H _(8) O)`
`CH (3) - CH _(2 ) -O - CH_(3)" ""2- methoxy ethane" (C _(3) H _(8) O)`
e.g.: 2. `CH _(3) - CH _(2) -OH " " "Ethanol" `
`CH _(3) - O - CH _(3) " " "methoxy methane"`