List of top Chemistry Questions on Isomerism asked in KCET

Compounds P and R in the following reaction are
Chemical Reaction

in the reaction

MgBr+CH3NH2 Dry ether

MgBr+CH3NH2 Dry ether the number of possible isomers for the organic compound is 

Which one of the following is an isotonic pair of solution ?
Which of the following is not a pair of functional isomers?
Which of the following is NOT a pair of functional isomers?
Meso compounds do not show optical activity because
The number of optical isomers of the compound $CH_3-CHBr-CHBr- COOH$ is
Methoxy methane and ethanol are