JEE Main Test 54

Result

JEE Main Test 54

Score
-
out of -
Rank
-
out of -

TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following does not exist as a zwitter ion?

A
Glycine

B
Glutamic acid

C
Sulphanilic acid

D
p-aminobenzoic acid

Solution

The lone pair of electrons on the -NH₂ group is donated towards the benzene ring due to resonance effect. As a result, acidic character of -COOH group and basic character of -NH₂ group decrease. Therefore, the weakly acidic -COOH group cannot transfer an H⁺ ion to the weakly basic -NH₂ group. Thus, o- and p-aminobenzoic acids do not exist as zwitter ions.