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JEE Main levelSingle correct optionDifficulty 2 of 3bm068

Match the amino acids with their class: P = glutamic acid, Q = lysine, R = valine; classes: 1 = acidic, 2 = basic, 3 = neutral.

  1. AP-1, Q-2, R-3
  2. BP-2, Q-1, R-3
  3. CP-3, Q-2, R-1
  4. DP-1, Q-3, R-2

Answer: A

Glutamic acid has two groups and one , so it is acidic. Lysine has two and one , so it is basic. Valine has one of each, so it is neutral: P-1, Q-2, R-3.
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