Chemistry MCQs for NEET — Practice Questions with Answers

 (d) Alcohols show position isomerism; Ethers show metamerism; Alcohols and ethers show functional isomerism.         

(c) $$\begin{gathered} {\mathrm{CH}}_3-\underset{|}{\mathrm{C}}=\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_3 \\ {\mathrm{CH}}_3 \end{gathered}$$ will not show cis-trans isomerism because double bonded carbon atom have two same groups (-CH₃, methyl group)

(d) Butane and isobutane and all higher alkanes show isomerism. 

(a) Acid has -COOH group whereas, ester has -COOR group.

(d) Pair of optical isomerism and geometrical isomerism are able to exhibit the phenomenon of stereoisomerism because both types of isomers differ only in their orientation in space.

(c) The conversion of $\mathrm{\alpha }$-glucose and $\mathrm{\beta }$-glucose is called mutarotation.

(d) A pair of d- l-optical isomers, i.e, enantiomer on mixing in equal moles gives racemic mixture.

(d) It is the definition of diastereoisomers.

(a) 

• Recrystallization: solids that are selectively crystallized in the presence of other compounds.
• the diastereomers have formed, is to separate them using recrystallisation. This is possible because enantiomers have shared physical properties such as melting point and boiling point, but diastereomers have different chemical properties, so they can be separated like any two different molecules.