Q.69 Chemistry ⭐ 360° Option Elimination Active

NEET 2025 Chemistry Question 69 Solution

Topic: Biomolecules · Official NTA Booklet Code 45

Question

Match List I (Name of Vitamin) with List II (Deficiency disease). List I: A. Vitamin B₁₂; B. Vitamin D; C. Vitamin B₂; D. Vitamin B₆. List II: I. Cheilosis; II. Convulsions; III. Rickets; IV. Pernicious anaemia. Choose the correct answer from the options given below:

✓

Verified Against NTA Final Answer Key

Option (2) : A-IV, B-III, C-I, D-II

📚 Biomolecules Easy

📋 Given Parameters & Problem Setup

List I (Vitamins) A. Vitamin B₁₂, B. Vitamin D, C. Vitamin B₂, D. Vitamin B₆

List II (Deficiency Diseases) I. Cheilosis, II. Convulsions, III. Rickets, IV. Pernicious anaemia

⚡

The 30-Second Exam Hall Shortcut: ⚡ Vitamin Deficiency Canonical Pairings

⏱️ Save ~30 seconds

Vitamin B₁₂ = Pernicious Anaemia (A-IV). Vitamin D = Rickets (B-III). Vitamin B₂ (Riboflavin) = Cheilosis (C-I). Vitamin B₆ (Pyridoxine) = Convulsions (D-II)!

1 Recall Vitamin B₁₂: Essential for RBC maturation; deficiency causes Pernicious anaemia ⟹ A matches IV.

2 Recall Vitamin D: Required for bone mineralization; deficiency causes Rickets in children ⟹ B matches III.

3 Looking at options: Only Option (2) and (4) feature A-IV, B-III.

4 Recall Vitamin B₂ (Riboflavin): Deficiency causes fissures at lip corners called Cheilosis ⟹ C matches I.

5 Recall Vitamin B₆ (Pyridoxine): Deficiency causes Convulsions ⟹ D matches II.

6 Match: A-IV, B-III, C-I, D-II.

7 Select Option (2) in under 10 seconds!

🛡️

Why You Can 100% Trust This Shortcut: Classification of Vitamins & Deficiency Disorders (NCERT Chemistry · Biomolecules).

📐

Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Match Vitamin B₁₂ and Vitamin D

Examine the biochemical roles and clinical deficiency symptoms from NCERT Table 14.1:

\text{Vitamin B}_{12} \text{ (Cyanocobalamin)} \implies \text{Pernicious anaemia (IV)}

• A matches IV (A-IV).
• Vitamin D (Calciferol): Regulates calcium and phosphate absorption. Deficiency leads to bone softening and malformation in children known as Rickets (III).
• B matches III (B-III).

Step 2

Match Vitamin B₂ and Vitamin B₆

Examine water-soluble B-complex vitamins:

\text{Vitamin B}_2 \text{ (Riboflavin)} \implies \text{Cheilosis (fissuring of lips, I)}

• C matches I (C-I).
• Vitamin B₆ (Pyridoxine): Involved in amino acid metabolism and neurotransmitter synthesis. Severe deficiency manifests clinically as Convulsions (II).
• D matches II (D-II).

Step 3

Synthesize the Complete Match

Combine the individual pairings:

\text{A-IV, B-III, C-I, D-II} \implies \text{Option (2)}

• Matches Option (2) exactly.

⭐

360° Option Elimination Engine Key Feature

Diagnose every choice: Know exactly why the right option works and why distractors fail.

4-Option Deep Scan

1 A

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Assigns cheilosis to B₁₂ and pernicious anaemia to B₆.

⚠️

Student Fallacy (Why candidates pick this trap): Scrambling B-complex vitamins.

2 B

✓ 100% Correct

Verdict & Scientific Reason:

100% correct. B₁₂ (Pernicious anaemia), D (Rickets), B₂ (Cheilosis), B₆ (Convulsions).

💡

Why this is airtight: None; verbatim NCERT Table 14.1 recall.

3 C

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Assigns convulsions to B₁₂.

⚠️

Student Fallacy (Why candidates pick this trap): Confusing neurological manifestations of B₁₂ with B₆.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Swaps B₂ and B₆ deficiencies (convulsions and cheilosis).

⚠️

Student Fallacy (Why candidates pick this trap): Swapping B₂ and B₆.

⚠️

NTA Trap Alert: Swapping Vitamin B₂ (Cheilosis) and B₆ (Convulsions)

Option 4 has A-IV and B-III correct, but swaps C and D (assigning convulsions to B₂ and cheilosis to B₆). Remembering that B₂ (Riboflavin) causes cheilosis prevents falling into this distractor!

🛡️ How to avoid the -1 mark: Mnemonic: B2 = Cheilosis (2 lips); B6 = Convulsions!

📖

Core NEET Syllabus Standard

NEET Chemistry Core Syllabus · Biomolecules Standard Benchmark

Core Scientific Principle Tested:

"B₁₂ deficiency causes pernicious anaemia; D causes rickets; B₂ causes cheilosis; B₆ causes convulsions."

Syllabus Focus: Vitamins: Classification and Deficiency Diseases

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

B12 = Anaemia, D = Rickets, B2 = Cheilosis (Lips), B6 = Convulsions ⟹ Option (2)!

Ready to attempt under real exam pressure?

Test your speed and accuracy in the authentic 180-minute timed NTA simulator.

Launch NEET 2025 CBT Test →

← Previous (Q.68) All Chemistry Questions Grid Next (Q.70) →

Classification & Functions of Biomolecules (Proteins, Polysaccharides & Secondary Metabolites)

View Solution →

Spotted a mistake in this solution? Report an error ([email protected])

⚖️ Legal & Fair Dealing Notice: Sourced from publicly released NEET 2025 question papers and NEET answer keys for private study, research, and non-commercial educational practice under Fair Dealing (Section 52(1)(a) of the Indian Copyright Act, 1957). Not affiliated with or endorsed by NTA or NMC.

NEET 2025 Chemistry Question 69 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Vitamin Deficiency Canonical Pairings

Step-by-Step Rigorous Workflow & Mathematical Proof

Match Vitamin B₁₂ and Vitamin D

Match Vitamin B₂ and Vitamin B₆

Synthesize the Complete Match

360° Option Elimination Engine Key Feature

NTA Trap Alert: Swapping Vitamin B₂ (Cheilosis) and B₆ (Convulsions)

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

🔗 Related Questions — Biomolecules

Secondary and Tertiary Structural Conformations of Proteins

Lassaigne's Sodium Fusion Test for Sulfur & Amino Acid Diagnostic

Classification of Vitamins and Their Primary Dietary Sources

Classification & Functions of Biomolecules (Proteins, Polysaccharides & Secondary Metabolites)

Solve 4 NEET Questions a Day — One per Subject