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JEE Main 202315 AprilMorning Shift
Exam
JEE Main
Year
2023
Date
15 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Biomolecules

JEE Main 2023 · 15 April · Morning Shift · Chemistry · Biomolecules

Which is not true for arginine?

Which is not true for arginine?Which is not true for arginine?

Options

  1. AIt has a fairly high melting point
  2. BIt is associated with more than one pKa{pK}_{a} values.
  3. CIt has high solubility in benzene.
  4. DIt is a crystalline solid.

Correct answer

C. It has high solubility in benzene.

Step-by-step solution

In aqueous solutions carboxyl group can lose protons and the amino group can accept a proton thus giving rise to a dipolar known as zwitter ion. Due to this dipolar behaviour they have strong electrostatic interactions within them. For this reason melting point of amino acids is high. It has more than one basic groups amine and guanidine, hence it has two pKa values. It is crystaline solid

Which is not true for arginine?

Since arginine is polar, it is not soluble in benzene.

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