Isomerism — Prelims Questions

Which of the following pairs represents functional group isomers?

How many chiral centers are present in 2,3-dibromobutane?

Which of the following compounds can exhibit cis-trans isomerism?

Which of the following statements about tautomerism is correct?

How many structural isomers are possible for $C_4H_9Br$?

Which of the following pairs are enantiomers?

Which of the following compounds is a metamer of $CH_3CH_2OCH_2CH_3$ (diethyl ether)?