When it comes to NEET Chemistry preparation, Polymers and Biomolecules are often underestimated chapters despite offering high scoring potential. Unlike complex physical chemistry topics, these chapters are more fact-based, involve direct questions, and are relatively quick to revise. For students aiming to maximize marks with minimal effort, Polymers and Biomolecules are smart picks.
Over the past few years, NEET has consistently included 2–3 questions combined from these two chapters. While this may seem like a small portion, the clarity and predictability of questions make them easy to attempt and score full marks. For example, questions like “Which monomer forms Nylon-6,6?” or “Which vitamin is water-soluble?” are factual and require memory rather than long calculations.
Another advantage is that these chapters are often covered towards the end of NCERT textbooks, making them ideal for revision during the final weeks before NEET. They also complement other biology-heavy sections due to their biochemical relevance—especially Biomolecules.
So, whether you’re polishing your NEET revision or creating a high-yield study plan, Polymers and Biomolecules should be on your priority list. With a focus on names, structures, and key reactions, students can easily gain 8–12 marks from these two chapters alone.
Polymers in NEET: Important Concepts & Memory Tricks
What are Polymers?
Polymers are large molecules formed by the repeated linkage of small units called monomers. These linkages occur through polymerization reactions, where monomers join via covalent bonds to form long chains.
There are two main types of polymers:
- Addition Polymers: Formed by simple addition reactions of unsaturated monomers (e.g., polyethene, PVC).
- Condensation Polymers: Formed by elimination of small molecules like water or HCl during polymerization (e.g., Nylon-6,6, Bakelite).
Understanding this classification is crucial for NEET, as questions often ask students to identify the type of polymer or the monomers involved.
Most Asked Polymers in NEET
Certain polymers appear frequently in NEET questions. Here’s a quick list of high-frequency polymers:
- Nylon-6,6: Condensation polymer from hexamethylene diamine + adipic acid.
- Bakelite: Thermosetting polymer from phenol + formaldehyde.
- Buna-S: Synthetic rubber from butadiene + styrene.
- PVC: Polyvinyl chloride (from vinyl chloride).
- Teflon: From tetrafluoroethylene.
- Polythene: From ethene.
You should also know the difference between:
- Natural Polymers: e.g., starch, cellulose, proteins.
- Synthetic Polymers: e.g., nylon, polyester, neoprene.
Easy Memory Tricks
NEET loves to ask about monomers and polymer types, so mnemonics can help:
- “Nylon-6,6: Hexa-hex” → 6 carbon diamine + 6 carbon diacid.
- “Buna-S: Bu = Butadiene, S = Styrene”
- PVC: Comes from Vinyl Chloride → Vinyl = Vinylic group (–CH=CH₂)
Visual aids like flowcharts or tables can help retain this better, especially for last-minute revision.
Biomolecules in NEET: Focus Areas
Biomolecules Overview
Biomolecules are chemical compounds found in living organisms. NEET questions usually come from five main categories:
- Carbohydrates: Monosaccharides (e.g., glucose), disaccharides (e.g., sucrose), polysaccharides (e.g., starch).
- Proteins: Composed of amino acids, responsible for structure and function.
- Nucleic Acids: DNA and RNA, carriers of genetic information.
- Vitamins: Classified as fat-soluble (A, D, E, K) and water-soluble (B, C).
- Enzymes: Biological catalysts with high specificity.
Most Tested Subtopics
NEET often includes direct, factual questions from Biomolecules. Key areas include:
- Glucose Structure & Isomerism: Questions on open-chain vs cyclic forms and optical activity.
- Glycosidic Linkages: Bond between monosaccharides in disaccharides like maltose, sucrose.
- Amino Acids: Know the acidic, basic, and neutral types; Zwitterion concept is frequently asked.
- Protein Structure: Understanding primary, secondary, tertiary, and quaternary levels is essential.
- DNA vs RNA: Difference in sugar (deoxyribose vs ribose), nitrogenous bases (T vs U), single/double-stranded.
- Enzyme Action: Focus on the lock and key model and the effect of temperature/pH on enzyme activity.
NEET often tests memory + conceptual clarity here. So, flashcards and repeated revision of short facts work best.
Polymers & Biomolecules: Chapter Weightage in NEET
Expected Number of Questions
In NEET, Polymers and Biomolecules together contribute around 2 to 3 questions every year, totaling 8–12 marks. While the individual chapters may appear short in the NCERT syllabus, their exam weightage is consistent and significant, especially given their low difficulty level.
Trend from NEET 2020 to 2024
| Year | Polymers | Biomolecules | Total Questions |
| NEET 2020 | 1 | 1 | 2 |
| NEET 2021 | 1 | 2 | 3 |
| NEET 2022 | 1 | 1 | 2 |
| NEET 2023 | 2 | 1 | 3 |
| NEET 2024 | 1 | 2 | 3 |
This steady presence highlights why these chapters should not be skipped in revision plans.
Why These Chapters Are Considered High ROI
- Concept-Light, Fact-Heavy: Easy to learn and revise.
- Direct NCERT-Based Questions: NEET picks straightforward lines from the NCERT book.
- Quick Gains: With minimal effort, students can secure up to 12 marks.
- Low Calculation Involvement: Most questions are memory-based, ideal for last-minute prep.
Smart aspirants use these chapters to boost their overall Chemistry score without getting bogged down in time-consuming numerical problems.
Quick Revision: Tables & Short Notes
Important Polymers with Uses & Monomers
| Polymer | Monomers | Use |
| Nylon-6,6 | Hexamethylene diamine + Adipic acid | Fibres, ropes |
| PVC | Vinyl chloride | Pipes, cable insulation |
| Teflon | Tetrafluoroethylene | Non-stick cookware |
| Bakelite | Phenol + Formaldehyde | Electrical insulators |
| Polythene | Ethene | Plastic bags |
| Buna-S | Butadiene + Styrene | Tyres, footwear |
Key Biomolecules and Functions
| Biomolecule | Example | Function |
| Carbohydrate | Glucose | Energy source |
| Protein | Insulin | Hormonal regulation |
| Nucleic Acid | DNA/RNA | Genetic information |
| Vitamin A | Retinol | Vision, skin health |
| Enzyme | Amylase | Breaks down starch |
Shortcut Formulas / Key Facts
- D-form Glucose: Most common form of glucose in the body.
- Zwitterions: Amino acids at isoelectric point have both +ve and –ve charges.
- Lock and Key Model: Enzyme fits the substrate exactly—high specificity.
- Monomer Trick: “Hexa-hex for Nylon-6,6” (6 carbon diamine + 6 carbon acid).
Previous Year NEET Questions
NEET 2023
Q1. Identify the monomer used in the manufacture of Teflon:
A) Vinyl chloride
B) Ethylene
C) Tetrafluoroethylene
D) Propylene
Answer: C
Explanation: Teflon is made from tetrafluoroethylene via addition polymerization.
NEET 2022
Q2. Which one of the following is a water-soluble vitamin?
A) A
B) D
C) K
D) C
Answer: D
Explanation: Vitamin C is water-soluble; A, D, E, K are fat-soluble.
NEET 2021
Q3. The enzyme involved in the breakdown of starch is:
A) Lipase
B) Amylase
C) Maltase
D) Protease
Answer: B
Explanation: Amylase breaks down starch into simpler sugars.
Practice Questions for Students
Polymers (3 MCQs)
Q1. Which of the following is a condensation polymer?
A) PVC
B) Teflon
C) Nylon-6,6
D) Polythene
Q2. Buna-S is a copolymer of:
A) Butadiene and Styrene
B) Butadiene and Acrylonitrile
C) Ethylene and Propylene
D) Vinyl chloride and Ethene
Q3. Which polymer is used in making non-stick cookware?
A) Polystyrene
B) Teflon
C) Nylon-6
D) PVC
Biomolecules (2 MCQs)
Q4. Which of the following is a disaccharide?
A) Glucose
B) Fructose
C) Sucrose
D) Cellulose
Q5. Which type of amino acid carries both positive and negative charges at isoelectric point?
A) Basic
B) Acidic
C) Zwitterion
D) Neutral
Answers
A1. C
Explanation: Nylon-6,6 is formed by condensation of diamine and diacid.
A2. A
Explanation: Buna-S = Butadiene + Styrene.
A3. B
Explanation: Teflon (PTFE) is used for its non-stick and heat-resistant properties.
A4. C
Explanation: Sucrose = Glucose + Fructose → Disaccharide.
A5. C
Explanation: Zwitterions contain both +ve (–NH₃⁺) and –ve (–COO⁻) groups.
FAQs on Polymers & Biomolecules for NEET
Are Polymers and Biomolecules easy scoring chapters in NEET?
Yes, absolutely. These chapters are among the most scoring topics in the NEET Chemistry syllabus. They are fact-based, mostly theoretical, and questions are often lifted directly from NCERT lines. With minimal effort, students can secure 8–12 marks by mastering these two chapters. There’s little to no calculation involved, making them ideal for quick revision and last-minute confidence boosts.
What type of questions come from these chapters?
NEET typically asks:
- Match the polymer with its monomer
- Identify the type of polymerization (addition/condensation)
- Monomer combinations in synthetic rubbers (e.g., Buna-S)
- Structure-based questions in biomolecules like identifying glucose forms, types of amino acids, or enzyme action
- Fact recall questions such as vitamin types, nucleic acid components, or enzyme functions
Most questions are straightforward MCQs where accuracy depends on recall, not problem-solving.
How to revise them in the last week before NEET?
- Focus on tables and short notes: Revise monomer-polymer pairs, enzyme names, vitamin functions.
- Use flashcards or mnemonic tricks for memorization.
- Solve at least 10–15 PYQs from the last 5 NEET papers.
- Take chapter-specific mock quizzes to reinforce recall speed.
- Review NCERT textbook lines—many NEET questions are directly sourced from them.
With 2–3 quick revisions, you can confidently answer all questions from these chapters.
Conclusion
Polymers and Biomolecules may be short chapters, but they pack a punch when it comes to scoring in NEET Chemistry. With a combined weightage of 2 to 3 questions, they offer high returns on minimal time investment—making them a strategic part of every topper’s revision plan.
These chapters don’t demand complex calculations or deep conceptual understanding. Instead, they reward sharp memory, smart organization, and focused revision. Whether it’s remembering which monomer builds Teflon or identifying the zwitterionic form of an amino acid, the questions are predictable and manageable.
In the last few weeks before NEET, prioritize smart revision using:
- Summary tables
- PYQs
- Mock tests
This approach ensures you don’t miss out on easy marks that could make a real difference in your final score.
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