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  4. Which of the following will not exist in zwitter ionic form at pH=7 ?

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Q. Which of the following will not exist in zwitter ionic form at $pH=7$ ?

JEE MainJEE Main 2018Biomolecules

Solution:

At $pH =7$ compound (4) will not exist as zwitter ion.

As nitrogen exists in the form of amide not in the form of amine, therefore, it will not get protonated at $pH\, 7$.