Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMELEMENT OF SYMMETRYEasy2 minQB
ChemistryEasysingle choice
Which of the following are optically active?
(a) 
(b) 
(c) 
(d) 
(e) 
(f) 
(g) 
(h) 
Options:
Answer:
B
Solution:
(a) cis-1,2-dimethylcyclopropane, (b) cis-1,2-dichlorocyclopropane and (h) cis-1,2-dimethylcyclohexane each have an internal plane of symmetry (meso) : optically inactive.
(c) trans-1,2-dimethylcyclopropane, (d) trans-1,2-dichlorocyclopropane, (e) butan-2-ol, (f) trans-1,2-dimethylcyclobutane and (g) 3-methylhexane have no plane, centre or alternating axis of symmetry : chiral, so pure samples are optically active.
Ans. (B) (c), (d), (e), (f) and (g).
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:ELEMENT OF SYMMETRY
⏱ 2mℹ️ Source: QB
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