Which of the following compounds exhibits stereoisomerism ?

How many optically active stereoisomers are possible for butane -2, 3-diol ?

Correct order of nucleophilicity

Give the E-Z designation of the following compound

How many different alcohols (excluding optical isomers) are possible with the molecular formula C4H1

Optical isomers possible for the given compound is : CH3 – CH(OH) – CH(OH) – CH3