Question

Which of the following show optical activity???
1) 2-butanol
2) 1-butanol
3) 1-chlorobutane
4) 2-chlorobutane
5) 2-pentanol
6) 3-pentanol
7) 2-aminopropane

Answer 1

main thing is that you should use concept. optical active compounds are those compounds with which all the functional groups attached are different

Answer 2

chiral carbon is an essential condition for a compound to show optical activity

chiral carbon is a carbon to which four different groups are attached

compounds which show optical activity
2 butanol
2-chlorobutane
2-pentanol