Class JEE Chemistry ALL Q #1155
KNOWLEDGE BASED
APPLY
4 Marks 2026 JEE Main 2026 (Online) 21st January Morning Shift MCQ SINGLE
Given below are two statements: Statement I: Arginine and Tryptophan are essential amino acids. Statement II: Glycine does not have any chiral carbon.
(A) Both statement-I and statement-II are correct
(B) Both statement-I and statement-II are incorrect
(C) Statement-I is correct and statement-II is incorrect
(D) Statement-I is incorrect and statement-II is correct
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Step-by-Step Solution

  1. Statement I: Arginine and Tryptophan are essential amino acids. This statement is incorrect. While Tryptophan is an essential amino acid, Arginine is conditionally essential, meaning it's essential under certain conditions (like growth or illness) but not always.
  2. Statement II: Glycine does not have any chiral carbon. This statement is correct. Glycine's central carbon atom is bonded to two hydrogen atoms, making it achiral. A chiral carbon must be bonded to four different groups.
  3. Therefore, Statement I is incorrect, and Statement II is correct.

Correct Answer: D

AI Suggestion: Option D

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Pedagogical Audit
Bloom's Analysis: This is an APPLY question because it requires the student to apply their knowledge of essential amino acids and chirality to determine the correctness of the given statements.
Knowledge Dimension: FACTUAL
Justification: The question directly tests the student's recall of factual information about amino acids, specifically which ones are essential and the structure of glycine.
Syllabus Audit: In the context of JEE, this is classified as KNOWLEDGE. The question assesses direct recall of facts related to biomolecules, a core knowledge area in the JEE syllabus.

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