The minimum number of C atoms required to be present in an optically active alkene are:

The minimum number of C atoms present in ketone is-

The minimum number of carbon atoms to be present in monohalogen derivative of alkane to be optically active is

The minimum number of carbon atoms to be present to write an ester is

First member of optically active alkene is :

First member of optically active alkene is :

The minimum number of carbon atoms that should be present in a carbohydrate is:

The minimum number of carbon atoms to be present in an alkyne to exhibit chain isomerism is

The minimum number of carbon atoms to be present in an alkyne to exhibit chain isomerism

The minimum number of carbon atoms to be present in a carboxylic acid to exhibit optical activity is