Chemistry - GOC Question with Solution | TestHub
ChemistryGOCRESONANCE AND MESOMERIC EFFECTMedium2 minQB
ChemistryMediumsingle choice
How many of the following compounds are resonance stabilised ?
(1) 
(2) 
(3) 
(4) 
(5) 
(6) 
(7) 
(8) 
(9) 
(10) 
Options:
Answer:
C
Solution:
(1) to (3) have a charge next to a C=C (allyl type). (4) has the C⁺ next to a conjugated diene. (6) has two conjugated C=C bonds. (7) phenol, (8) urea, (9) enamine and (10) oxocarbenium are all delocalised.
In (5) the two C=C bonds in each ring are separated by sp³ carbons, so (5) is the only one with no resonance.
Count = 10 - 1 = 9.
Stream:JEESubject:ChemistryTopic:GOCSubtopic:RESONANCE AND MESOMERIC EFFECT
⏱ 2mℹ️ Source: QB
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