Q.103 Botany ⭐ 360° Option Elimination Active

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NEET 2025 Botany Question 103 Solution

Topic: Microbes in Human Welfare · Official NTA Booklet Code 45

Question

Which of the following is an example of non-distilled alcoholic beverage produced by yeast?

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Verified Against NTA Final Answer Key

Option (3) : Beer

📚 Microbes in Human Welfare Easy

📋 Given Parameters & Problem Setup

Category Non-distilled alcoholic beverage

Microorganism Yeast (Saccharomyces cerevisiae / Brewer’s yeast)

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The 30-Second Exam Hall Shortcut: ⚡ Wine & Beer = Without Distillation Rule

⏱️ Save ~20 seconds

Wine and Beer are produced WITHOUT distillation (low alcohol content ~3-12%)! Whisky, Brandy, and Rum are produced WITH distillation of fermented broth (high alcohol ~40%)! ⟹ Beer is the non-distilled beverage!

1 Recall NCERT Microbes in Human Welfare classification of fermented beverages:

2 - Without distillation (Non-distilled): Wine and Beer.

3 - With distillation (Distilled spirits): Whisky, Brandy, Rum, Gin, Vodka.

4 Options (1) Whisky, (2) Brandy, and (4) Rum are all distilled beverages.

5 Option (3) Beer is produced without distillation.

6 Select Option (3) in under 5 seconds!

🛡️

Why You Can 100% Trust This Shortcut: Industrial Microbes & Fermentation (NCERT Biology · Microbes in Human Welfare: Saccharomyces cerevisiae / Brewer’s yeast).

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Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Biological Fermentation by Brewer’s Yeast

Saccharomyces cerevisiae ferments malted cereals and fruit juices into ethanol and carbon dioxide:

\text{C}_6\text{H}_{12}\text{O}_6 \xrightarrow{\text{Yeast (Zymase)}} 2\text{C}_2\text{H}_5\text{OH} + 2\text{CO}_2

• Natural yeast fermentation ceases when alcohol concentration reaches ~13% due to ethanol toxicity.

Step 2

Processing: Distillation vs. Non-Distillation

Fermented products are processed in two ways to achieve different alcohol concentrations:

\text{Non-distilled: Wine and Beer}, \quad \text{Distilled: Whisky, Brandy, and Rum}

• Wine and Beer: Filtered and bottled without distillation, maintaining lower alcohol percentages (3–6% in beer, 9–12% in wine).
• Whisky, Brandy, and Rum: Distilled to concentrate alcohol content to 40% or higher.
• Therefore, Beer is the correct non-distilled alcoholic beverage, matching Option (3).

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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. Whisky is a distilled beverage prepared from fermented grain mash.

⚠️

Student Fallacy (Why candidates pick this trap): Thinking whisky is non-distilled.

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Brandy is a distilled beverage prepared from fermented fruit juice (wine).

⚠️

Student Fallacy (Why candidates pick this trap): Confusing brandy with wine.

3 C

✓ 100% Correct

Verdict & Scientific Reason:

100% correct. Beer is produced without distillation from malted barley.

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Why this is airtight: None; verbatim NCERT recall.

4 D

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Rum is a distilled beverage made from fermented sugarcane byproducts (molasses).

⚠️

Student Fallacy (Why candidates pick this trap): Thinking rum is un-distilled.

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NTA Trap Alert: Confusing Raw Material with Distillation Processing

Students often memorize the raw materials (malt, molasses, fruit) but forget the distillation status. NCERT makes a very sharp distinction: "Wine and beer are produced without distillation whereas whisky, brandy and rum are produced by distillation"!

🛡️ How to avoid the -1 mark: Mnemonic: "WB" (Wine & Beer) = Without Boiling (Without distillation)!

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Core NEET Syllabus Standard

NEET Biology Core Syllabus · Microbes in Human Welfare Standard Benchmark

Core Scientific Principle Tested:

"Wine and beer are non-distilled alcoholic beverages; whisky, brandy, and rum are distilled."

Syllabus Focus: Fermented Beverages by Saccharomyces cerevisiae

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

WB = Without Boiling (Without Distillation) = Wine & Beer (Option 3)!

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NEET 2025 Botany Question 103 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Wine & Beer = Without Distillation Rule

Step-by-Step Rigorous Workflow & Mathematical Proof

Biological Fermentation by Brewer’s Yeast

Processing: Distillation vs. Non-Distillation

360° Option Elimination Engine Key Feature

NTA Trap Alert: Confusing Raw Material with Distillation Processing

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

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