JEE Main Organic Revision - Isomerism-4

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Question 1

The number of  aromatic isomers possible for C₇H₈O are

• A3
• B4
• C5
• D6

Question 2

In the reaction,
CH₃CHO + HCN → CH_{3 ­}CH(OH)CN
a chiral center is produced. This product would be

• ARacemic mixture
• BMeso compound
• CDextrorotatory
• DLaevorotatory

Question 3

Number of stereoisomers of the compound, 2-chloro-4-methylhex-2-ene is

• A2
• B4
• C6
• D7

Question 4

The optically active tartaric acid is named as D-(+)-tartaric acid because it has a positive

• AOptical rotation and is derived from D-glucose
• BpH in an organic solvent
• Coptical rotation and is derived from D-(+)-gylceraldehyde
• Doptical rotation only when substituted by deuterium

Question 5

Keto-enol tautomerism is observed in

• AC₆H₅CHO
• BC₆H₅OCH₃
• CC₆H₅COCH₂COOH
• DC₆H₅COC₆H ­₅

Question 6

Which will exhibit geometrical isomerism here:

• AA₂C=CAB
• BA₂C=CB₂
• CABC=CAB
• DABC=CX₂

Question 7

The given compound can exhibit

• AGeometrical isomerism
• BOptical isomerism
• CGeometrical and optical isomerism
• DConformational isomerism

Question 8

2-methylpenta-2,3-diene is achiral as it has

• Aa centre of symmetry
• Ba plane of symmetry
• Ca C₂ axis of symmetry
• Dboth center and plane of symmetry

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