NEET UG – Chemistry Practice Paper (Previous Years’ Questions) Part 21 | Topic: Chemistry in Everyday Life Total Questions: 30 | Total Marks: 120 Q1. Drugs that reduce fever are called: Antibiotics Analgesics Antipyretics Antiseptics Antipyretics reduce body temperature. Q2. Drugs that relieve pain without causing sleep are: Antipyretics Analgesics Antibiotics Tranquilizers Analgesics relieve pain. Q3. Which drug is used as an antiseptic? Aspirin Penicillin Dettol Paracetamol Dettol is a common antiseptic. Q4. Penicillin is an example of: Antiseptic Antibiotic Analgesic Antacid Penicillin kills bacteria. Q5. Substances used to kill microorganisms on surfaces are: Antibiotics Antiseptics Disinfectants Antacids Disinfectants kill microbes on surfaces. Q6. Which drug neutralizes stomach acid? Antacid Antibiotic Analgesic Tranquilizer Antacids neutralize stomach acid. Q7. Aspirin is commonly used as: Antibiotic Analgesic Antacid Antiseptic Aspirin relieves pain. Q8. Which compound is used as a preservative in foods? Sodium benzoate Glucose Sodium chloride Ethanol Sodium benzoate prevents microbial growth. Q9. Artificial sweetener used by diabetic patients: Glucose Saccharin Lactose Maltose Saccharin is calorie-free. Q10. Tranquilizers are used to: Kill bacteria Reduce anxiety Neutralize acid Increase appetite They calm the nervous system. Q11. Which compound is an antacid? Mg(OH)₂ NaCl CH₃COOH HCl Magnesium hydroxide neutralizes acid. Q12. Drugs preventing allergy are: Antiseptics Antihistamines Antibiotics Analgesics Antihistamines reduce allergic reactions. Q13. Example of antiseptic: Iodine Sugar Water Oxygen Iodine is used on wounds. Q14. Example of antibiotic: Paracetamol Aspirin Penicillin Saccharin Penicillin kills bacteria. Q15. Preservatives prevent: Digestion Microbial growth Sweetness Color They stop microorganisms. Q16. Example of artificial sweetener: Glucose Saccharin Fructose Lactose Saccharin is artificial. Q17. Drug reducing stomach acid: Antibiotic Antacid Analgesic Antiseptic Antacids neutralize acid. Q18. Example of tranquilizer: Aspirin Diazepam Penicillin Glucose Diazepam reduces anxiety. Q19. Drug preventing bacterial infection: Antibiotic Antacid Analgesic Antipyretic Antibiotics kill bacteria. Q20. Drug reducing pain: Antibiotic Analgesic Antacid Tranquilizer Analgesics relieve pain. Q21. Food preservative example: Sodium benzoate Water Oxygen Sugar Prevents microbial growth. Q22. Sweetener used in diet drinks: Glucose Aspartame Lactose Fructose Aspartame is artificial sweetener. Q23. Disinfectant example: Phenol Sugar Water Oxygen Phenol disinfects surfaces. Q24. Drug lowering fever: Antipyretic Antibiotic Antacid Antiseptic Antipyretics reduce fever. Q25. Artificial sweetener example: Saccharin Glucose Maltose Lactose Saccharin has no calories. Q26. Drug reducing anxiety: Antibiotic Tranquilizer Antacid Analgesic Tranquilizers calm nerves. Q27. Example of analgesic: Aspirin Penicillin Saccharin NaCl Aspirin relieves pain. Q28. Drug fighting infection: Antibiotic Antacid Analgesic Antipyretic Antibiotics fight infections. Q29. Chemical used in antiseptic lotion: Chloroxylenol Glucose Sodium chloride Oxygen Used in Dettol. Q30. Chemistry in everyday life mainly studies: Drugs Food chemicals Preservatives All of these All are part of daily life chemistry. Submit Paper Conclusion: Why Practicing Part 21 (Chemistry in Everyday Life) Is Important for NEET Preparation The chapter Chemistry in Everyday Life is one of the most practical and relatable sections in the NEET Chemistry syllabus. Unlike many other chapters that involve complex mechanisms, equations, and numerical calculations, this topic focuses on understanding how chemical principles influence our daily lives through medicines, food additives, preservatives, disinfectants, and sweetening agents. Practicing NEET UG Chemistry Practice Paper – Part 21 allows students to strengthen their grasp of these concepts and convert this chapter into a reliable scoring opportunity in the examination. One of the key advantages of this chapter is that the questions are generally conceptual and memory-based rather than calculation-intensive. NEET frequently includes direct questions from topics such as analgesics, antibiotics, antiseptics, disinfectants, antacids, antihistamines, tranquilizers, and artificial sweeteners. Students who regularly practice questions related to these categories become familiar with the terminology and their applications, making it easier to answer such questions quickly during the exam. This speed is crucial because the time saved here can be used to tackle more complex questions from physical or organic chemistry. Another important aspect reinforced by solving Part 21 is the clear differentiation between various types of drugs and their functions. Many students initially confuse the roles of antibiotics, antiseptics, and disinfectants. Through consistent practice, they learn that antibiotics fight bacterial infections inside the body, antiseptics prevent microbial growth on living tissues, and disinfectants are used to destroy microorganisms on non-living surfaces. Understanding these distinctions is essential because NEET often tests these concepts through simple but tricky multiple-choice questions. The practice paper also strengthens understanding of analgesics and antipyretics, which are commonly used medicines in everyday life. Analgesics are drugs that relieve pain, while antipyretics help reduce fever. Aspirin and paracetamol are classic examples frequently discussed in the syllabus. By solving structured questions on these drugs, students develop a clear understanding of their classification and uses. Such knowledge not only helps in NEET preparation but also builds a broader awareness of common medicines encountered in daily life. Another key area covered in this chapter is antacids and antihistamines, which play an important role in maintaining human health. Antacids neutralize excess stomach acid and are commonly used to treat acidity and indigestion. Compounds such as magnesium hydroxide and sodium bicarbonate fall into this category. Antihistamines, on the other hand, help reduce allergic reactions by blocking the action of histamine in the body. NEET often includes questions related to these compounds, and practicing them regularly ensures that students can answer them confidently. The chapter also introduces students to food preservatives and artificial sweeteners, which are widely used in the food industry. Preservatives such as sodium benzoate and sodium metabisulfite help prevent microbial growth in food products, thereby increasing their shelf life. Artificial sweeteners like saccharin and aspartame are used as sugar substitutes, particularly for people with diabetes or those following calorie-restricted diets. Understanding the properties and uses of these substances helps students appreciate the practical applications of chemistry in the food we consume every day. Another interesting aspect of this chapter is its connection to modern pharmaceutical chemistry. Drugs are designed to interact with specific biological targets in the body, such as enzymes or receptors. Even though NEET questions are generally simplified, having a conceptual understanding of how drugs work can help students better interpret exam questions. Practicing Part 21 reinforces the classification of

Total Questions: 30 | Total Marks: 120 Q1. Polymers are formed by the process called: Hydrolysis Polymerisation Oxidation Reduction Small monomers join to form polymers. Q2. Nylon-6,6 is an example of: Addition polymer Condensation polymer Copolymer Elastomer Formed by condensation reaction. Q3. Natural rubber is made from: Isoprene Ethene Styrene Vinyl chloride Polymer of isoprene. Q4. Which polymer is used in non-stick cookware? Nylon Teflon Bakelite PVC Teflon is PTFE. Q5. Which polymer is biodegradable? Nylon PHBV Teflon PVC PHBV is biodegradable. Q6. Which polymer is formed by addition polymerisation? Nylon Terylene Polythene Bakelite Ethene polymerizes to polythene. Q7. Bakelite is: Thermoplastic Thermosetting polymer Elastomer Fibre Bakelite is a thermosetting plastic. Q8. Terylene is also called: Polyester Polyamide Polyethylene Polypropene Terylene is a polyester. Q9. Buna-S rubber is made from: Butadiene + Styrene Butadiene + Acrylonitrile Ethene + Propene Styrene only Synthetic rubber. Q10. Nylon is classified as: Fibre Elastomer Thermoplastic Thermosetting polymer Used as synthetic fibre. Q11. PVC is prepared from: Vinyl chloride Styrene Isoprene Ethanol Polymer of vinyl chloride. Q12. Neoprene is prepared from: Chloroprene Butadiene Styrene Ethene Polymer of chloroprene. Q13. Teflon is a polymer of: Tetrafluoroethylene Styrene Ethene Vinyl chloride Teflon is PTFE made from tetrafluoroethylene. Q14. Buna-N rubber is formed from: Butadiene + Acrylonitrile Butadiene + Styrene Styrene + Ethene Isoprene + Styrene Buna-N is nitrile rubber. Q15. Starch is a polymer of: Fructose Glucose Sucrose Ribose Starch consists of glucose units. Q16. Cellulose is made of repeating units of: α-glucose β-glucose Fructose Galactose Cellulose contains β-glucose units. Q17. Which polymer is used in making electrical switches? PVC Nylon Bakelite Polythene Bakelite is heat-resistant and insulating. Q18. Polymerisation that occurs by repeated addition of monomers is called: Condensation polymerisation Addition polymerisation Step polymerisation Copolymerisation Monomers join without elimination of small molecules. Q19. Nylon-6 is produced from: Caprolactam Hexamethylenediamine Adipic acid Ethene Caprolactam polymerises to nylon-6. Q20. Which polymer is commonly used in plastic bottles? PVC PET Nylon Bakelite PET is used in beverage bottles. Q21. Vulcanization of rubber involves addition of: Chlorine Oxygen Sulfur Nitrogen Sulfur forms cross-links in rubber. Q22. Polymer used in bulletproof jackets is: Nylon Kevlar PVC PET Kevlar is extremely strong fibre. Q23. Which polymer is used for making ropes and fishing nets? Nylon PVC Bakelite Teflon Nylon fibres are strong and durable. Q24. Which polymer is used in raincoats? Nylon PVC PET Bakelite PVC is waterproof. Q25. Which polymer is used in pressure cookers? Teflon Nylon Polystyrene PVC Teflon resists heat and chemicals. Q26. Which polymer is used for making combs? PVC Bakelite Nylon PET Bakelite is rigid and durable. Q27. Polystyrene is formed from monomer: Styrene Vinyl chloride Ethene Isoprene Styrene polymerises to polystyrene. Q28. Which polymer is commonly used for packaging materials? Nylon Polythene Bakelite Kevlar Polythene is widely used for packaging. Q29. Which polymer is formed by condensation polymerisation? Polythene PVC Nylon Polystyrene Nylon is a condensation polymer. Q30. Polymers are important because they: Form plastics Form fibres Form rubber materials All of these Polymers have wide industrial applications. Submit Paper Conclusion – Part 20 (Polymers) The Polymers chapter is one of the most straightforward and memory-based topics in the NEET Chemistry syllabus. Unlike many other organic chemistry chapters that involve complex reaction mechanisms, polymers focus mainly on understanding the types of polymers, monomers, polymerisation reactions, and industrial applications. Because of this, the chapter often provides students with quick and reliable marks in the examination. Practicing Part 20 helps students clearly understand the difference between addition and condensation polymers, which is one of the most frequently tested concepts in NEET. Students learn to identify polymers such as nylon, terylene, bakelite, and polythene along with their corresponding monomers and preparation methods. These questions are often direct, but they require precise recall of facts. Another important concept reinforced in this practice paper is the classification of polymers into thermoplastics, thermosetting polymers, elastomers, and fibres. NEET frequently includes questions asking students to identify which category a particular polymer belongs to. Understanding these classifications helps in quickly solving such questions without confusion. The chapter also emphasizes synthetic rubbers and biodegradable polymers, which are increasingly relevant topics. Materials such as Buna-S, neoprene, and PHBV are commonly discussed in NEET-level questions. Practicing these MCQs ensures that students can easily remember their monomers, structures, and uses. Another advantage of mastering polymers is that the chapter requires conceptual clarity rather than lengthy calculations or reaction mechanisms. This makes it an excellent chapter for last-minute revision before the exam. Students who regularly practice questions like those in Part 20 can strengthen their recall ability and improve their confidence in handling theory-based chemistry questions. Overall, solving this practice paper helps improve speed, accuracy, and retention of key polymer concepts, making it easier for students to secure marks from this chapter. With proper revision and consistent practice, polymers can become one of the most reliable scoring areas in the NEET Chemistry paper. Another important reason why the Polymers chapter is considered a scoring topic in NEET Chemistry is its strong connection to real-world materials and industrial chemistry. Unlike some theoretical organic chemistry chapters, polymers relate directly to everyday products such as plastics, synthetic fibres, rubber materials, and biodegradable plastics. Understanding these applications not only helps students remember polymer names easily but also improves their ability to answer application-based questions in the NEET examination. One of the key concepts reinforced through practice questions in this paper is the relationship between monomers and the resulting polymer structure. Students often confuse the monomers used to produce polymers such as nylon-6,6, terylene, neoprene, and Buna-S. Regular practice helps students clearly associate each polymer with its respective monomer units. Once this connection becomes clear, answering NEET questions becomes much easier because many questions simply test recognition of these relationships. Another concept strengthened by solving Part 20 is the mechanism of polymerisation reactions. In the NEET syllabus, students are expected to distinguish between addition polymerisation and condensation polymerisation. Addition polymerisation involves unsaturated monomers joining together without loss of small molecules, while condensation polymerisation

NEET UG Chemistry Practice Paper – Part 19 (Biomolecules) focuses on one of the most direct and scoring chapters in the NEET syllabus. This practice set strengthens understanding of carbohydrates, proteins, nucleic acids, enzymes, and vitamins. By solving these MCQs, students can reinforce key biological chemistry concepts and improve accuracy in frequently asked NEET biomolecule questions. NEET UG – Chemistry Practice Paper (Previous Years’ Questions) Part 19 | Topic: Biomolecules Total Questions: 30 | Total Marks: 120 Q1. Glucose belongs to which class of biomolecules? Protein Carbohydrate Lipid Nucleic acid Glucose is a monosaccharide carbohydrate. Q2. Which carbohydrate is a disaccharide? Glucose Fructose Sucrose Ribose Sucrose = glucose + fructose. Q3. Which biomolecule acts as catalyst in biological reactions? Carbohydrates Proteins Lipids Vitamins Enzymes are proteins that catalyse reactions. Q4. DNA contains which sugar? Ribose Deoxyribose Glucose Fructose DNA contains deoxyribose sugar. Q5. Which test is used to detect proteins? Molisch test Biuret test Tollens test Fehling test Biuret test detects peptide bonds. Q6. The building blocks of proteins are: Amino acids Fatty acids Monosaccharides Nucleotides Proteins are polymers of amino acids. Q7. Which vitamin is water soluble? Vitamin A Vitamin D Vitamin C Vitamin K Vitamin C is water soluble. Q8. Which polysaccharide is storage form of glucose in animals? Starch Cellulose Glycogen Chitin Glycogen stores glucose in animals. Q9. RNA differs from DNA in containing: Thymine Uracil Cytosine Adenine RNA contains uracil instead of thymine. Q10. Which bond links amino acids in proteins? Glycosidic bond Peptide bond Ester bond Hydrogen bond Peptide bond joins amino acids. Q11. Which carbohydrate is non-reducing sugar? Glucose Maltose Sucrose Lactose Sucrose lacks free aldehyde/ketone group. Q12. Which vitamin prevents scurvy? Vitamin A Vitamin C Vitamin D Vitamin K Vitamin C deficiency causes scurvy. Submit Paper Conclusion – Part 19 (Biomolecules) The Biomolecules chapter is one of the most straightforward and scoring sections in NEET Chemistry. Unlike many organic chemistry chapters that involve complex reaction mechanisms, biomolecules focus primarily on conceptual understanding of biological compounds, including carbohydrates, proteins, nucleic acids, and vitamins. Practicing Part 19 helps students clearly understand the structure and function of important biomolecules. NEET questions from this chapter are often direct but require precise conceptual knowledge. Topics such as peptide bonds, reducing and non-reducing sugars, amino acid structure, enzyme function, and vitamin deficiency diseases frequently appear in the exam. Another advantage of mastering biomolecules is that it requires logical understanding rather than heavy calculations or long reaction mechanisms. This makes it a high-return chapter during revision. Students who practice structured MCQs like those in Part 19 can quickly strengthen memory retention of key biomolecule properties and biological functions. The questions in this practice paper also reinforce important concepts such as DNA vs RNA differences, storage polysaccharides, enzyme catalysis, and protein structure. These topics are repeatedly tested in NEET and are considered relatively scoring when students revise them regularly. Overall, solving this paper improves speed, accuracy, and conceptual clarity, helping students confidently handle biomolecule-based questions in NEET. With consistent practice, this chapter becomes one of the easiest sections to secure marks and strengthen overall Chemistry performance.

NEET UG Chemistry Practice Paper Part 18 on Amines with 30 MCQs, instant scoring, explanations, and PYQ-based questions for NEET 2026 preparation. Total Questions: 30 | Total Marks: 120 Q1. Basicity order in aqueous solution is: 1° > 2° > 3° 2° > 1° > 3° 3° > 2° > 1° All equal Secondary amines are most basic in aqueous solution. Q2. Which test distinguishes primary amine? Tollen’s test Carbylamine test Fehling’s test Lucas test Only primary amines give carbylamine test. Q3. Aniline is less basic than methylamine because: +I effect Resonance effect Hydrogen bonding Steric effect Lone pair delocalized in benzene ring. Q4. Hinsberg reagent is used to distinguish: Alcohols Aldehydes Amines Ethers Differentiates 1°, 2°, 3° amines. Q5. Diazotisation occurs with: Primary aromatic amine Secondary amine Tertiary amine Aliphatic amine Forms diazonium salt. Q6. Which compound forms diazonium salt stable at 0–5°C? Methylamine Aniline Ethylamine Dimethylamine Aromatic diazonium salts are stable. Q7. Which reaction converts amide to amine? Hoffmann bromamide Cannizzaro Aldol Reimer–Tiemann One carbon less amine formed. Q8. Basicity of amines depends on: +I effect Solvation Resonance All of these Multiple factors influence basicity. Q9. Which amine gives alcohol on reaction with nitrous acid? Primary aliphatic amine Secondary amine Tertiary amine Aniline Forms unstable diazonium intermediate. Q10. Aniline undergoes bromination to give: Mono-bromo product 2,4,6-tribromoaniline No reaction Para product only Strongly activating −NH₂ group. Q11. Which amine is most basic in gas phase? 1° 2° 3° NH₃ +I effect dominates in gas phase. Q12. Which compound undergoes Sandmeyer reaction? Diazonium salt Alcohol Ether Ketone Diazonium group replaced. Q13. Which amine forms nitrosoamine? Primary Secondary Tertiary Aromatic primary Secondary amines form nitrosoamines. Submit Paper ✅ Conclusion – Part 18 (Amines) The Amines chapter is one of the most concept-driven sections of Organic Chemistry for NEET. It connects reaction mechanisms, basicity trends, resonance effects, and important name reactions like Hoffmann bromamide and Sandmeyer reaction. Mastery of amines strengthens understanding of substitution reactions and aromatic chemistry. Part 18 helps students clearly understand basicity order in different phases, resonance effects in aniline, diazotisation reactions, and distinguishing tests like Carbylamine and Hinsberg. NEET frequently asks comparison-based questions from this chapter, and small conceptual errors can lead to wrong answers. By solving this paper, students improve reaction prediction skills, gain clarity in nitrogen chemistry, and build confidence in aromatic substitution reactions involving amines. The structured 30-question format strengthens exam temperament, speed, and accuracy. Overall, mastering Amines ensures stronger Organic Chemistry performance and reduces errors in mechanism-based questions—making this chapter a reliable scoring area in NEET.

Total Questions: 30 | Total Marks: 120 Q1. Which compound gives positive Tollens’ test? Ketone Aldehyde Ether Alcohol Aldehydes reduce Tollens’ reagent. Q2. Which compound gives iodoform test? Methanal Ethanone Propanal Benzaldehyde Methyl ketones give iodoform test. Q3. Aldehydes are more reactive than ketones due to: Steric hindrance +I effect Both steric and electronic factors Resonance Less steric hindrance and less +I effect. Q4. Which reagent reduces aldehyde to alcohol? KMnO₄ NaBH₄ HNO₃ FeCl₃ NaBH₄ reduces carbonyl compounds. Q5. Cannizzaro reaction occurs in: Aldehydes without α-H Ketones Alcohols Ethers Requires absence of α-hydrogen. Q6. Which compound undergoes Aldol condensation? Formaldehyde Acetaldehyde Benzaldehyde Ether Has α-hydrogen. Q7. Carboxylic acids are acidic due to: +I effect Resonance stabilization Hydrogen bonding Steric effect Carboxylate ion is resonance stabilised. Q8. Which acid is strongest? CH₃COOH ClCH₂COOH C₂H₅COOH HCOOH −I effect of Cl increases acidity. Q9. Which compound gives Schiff’s test? Ketone Aldehyde Acid Ester Schiff’s reagent detects aldehydes. Q10. Which acid forms ester with alcohol? Carboxylic acid Aldehyde Ketone Ether Esterification reaction. Q11. Which compound gives silver mirror test? Benzophenone Acetone Formaldehyde Ether Formaldehyde reduces Tollens’ reagent. Q12. Which compound has highest boiling point? Aldehyde Ketone Carboxylic acid Ether Strong hydrogen bonding (dimer formation). Q13. Decarboxylation reduces carbon atoms by: 1 2 3 None CO₂ removed. Q14. Which reagent oxidises aldehyde to acid? PCC Tollen’s reagent KMnO₄ Both b & c Both oxidise aldehydes. Q15. Which compound shows keto-enol tautomerism? Formaldehyde Acetone Benzene Ether Has α-hydrogen. Submit Paper Conclusion: Why Part 17 (Aldehydes, Ketones & Carboxylic Acids) Is Crucial for NEET Organic Chemistry Mastery The chapter Aldehydes, Ketones & Carboxylic Acids is one of the most concept-intensive and high-yield sections of Organic Chemistry for NEET aspirants. It forms the core of carbonyl chemistry, a topic that not only appears frequently in direct MCQs but also forms the backbone of multi-step reaction and conversion-based questions. NEET UG Chemistry Practice Paper – Part 17 is specifically structured to strengthen conceptual clarity, reaction prediction skills, and accuracy in this important chapter. One of the major strengths of this chapter lies in understanding the reactivity of the carbonyl group (C=O). NEET often tests why aldehydes are more reactive than ketones, focusing on steric and electronic factors. Students who clearly understand inductive effects and steric hindrance find these comparison questions straightforward. This practice paper ensures repeated exposure to such high-frequency concepts. Another key scoring area covered in Part 17 is qualitative tests, including Tollens’ test, Schiff’s test, Fehling’s test, and the iodoform test. These are classic NEET favourites. Students frequently confuse which compounds respond positively to these tests. Through structured MCQs, this paper ensures that students confidently identify aldehydes, methyl ketones, and related compounds without hesitation. The paper also strengthens understanding of important named reactions such as Aldol condensation, Cannizzaro reaction, and decarboxylation. These reactions require conceptual clarity about the presence or absence of α-hydrogen. Many NEET questions test this subtle distinction. Practicing Part 17 helps students internalize when and why these reactions occur. Another highly tested concept is acidity trends in carboxylic acids. Questions comparing substituted carboxylic acids based on −I and +I effects appear frequently in NEET. Understanding how electron-withdrawing groups increase acidity is essential. This practice paper reinforces these trends, enabling students to solve comparison-based questions quickly. Part 17 also builds strong understanding of oxidation and reduction reactions of carbonyl compounds. Distinguishing between mild and strong oxidizing agents, and identifying appropriate reducing agents such as NaBH₄ or LiAlH₄, is essential for exam accuracy. These reaction-based MCQs train students to interpret reagents correctly. The chapter further introduces students to keto-enol tautomerism, a concept that requires logical reasoning rather than memorization. NEET often frames conceptual questions around α-hydrogen presence, and repeated practice eliminates confusion in this area. Another important benefit of solving this paper is preparation for multi-step conversion problems. Carbonyl compounds frequently appear as intermediates in organic reaction sequences. Mastery of this chapter significantly improves performance in such questions. The structured 30-question format enhances speed, concentration, and reaction recall ability. Carbonyl chemistry demands precision, and small conceptual errors can lead to incorrect answers. Practicing a complete set improves exam temperament and decision-making under time pressure. The instant explanation-based feedback ensures that conceptual gaps are identified immediately. Organic Chemistry builds progressively, and misunderstandings in carbonyl chemistry can affect performance in amines, biomolecules, and polymers. Correcting errors at this stage strengthens the overall organic foundation. In conclusion, NEET UG Chemistry Practice Paper – Part 17 is a powerful concept-reinforcement and score-optimization tool. It sharpens understanding of carbonyl reactivity, named reactions, acidity trends, qualitative tests, and mechanism-based reasoning. For NEET aspirants aiming to achieve high accuracy and strong Organic Chemistry performance, mastering Aldehydes, Ketones & Carboxylic Acids through structured practice is an essential step toward exam success.

Part 16 | Topic: Alcohols, Phenols & Ethers Total Questions: 30 | Total Marks: 120📌 Very High-Weight Organic Chapter – Acidity, Reactions, Conversions NEET UG – Chemistry Practice Paper (Previous Years’ Questions) Part 16 | Topic: Alcohols, Phenols & Ethers Total Questions: 30 | Total Marks: 120 Q1. Acidity order is: Alcohol > Phenol Phenol > Alcohol Ether > Alcohol All equal Phenoxide ion is resonance stabilised. Q2. Lucas test distinguishes alcohols based on: Acidity Basicity Reactivity towards HCl/ZnCl₂ Boiling point Based on carbocation formation speed. Q3. Phenol reacts with NaOH to form: Sodium phenoxide Sodium alcoholate Ether Ester Phenol is acidic. Q4. Which alcohol is most reactive towards oxidation? Primary Secondary Tertiary Phenol Primary alcohol oxidizes easily. Q5. Williamson synthesis prepares: Alcohol Ether Ester Aldehyde Alkoxide + alkyl halide → ether. Q6. Phenol gives white precipitate with: HCl Br₂ water KMnO₄ FeCl₃ Forms 2,4,6-tribromophenol. Q7. FeCl₃ test confirms presence of: Alcohol Ether Phenol Ketone Violet colour complex. Q8. Which alcohol gives ketone on oxidation? Primary Secondary Tertiary All Secondary alcohol → ketone. Q9. Which alcohol gives alkene on heating with conc. H₂SO₄? Primary Secondary Tertiary All of these Dehydration reaction. Q10. Which ether is most reactive towards HI? Dimethyl ether Diethyl ether Tertiary ether All equal Cleavage easier at tertiary carbon. Q11. Phenol is more acidic than alcohol because of: +I effect −I effect Resonance stabilization Hydrogen bonding Phenoxide ion stabilised by resonance. Q12. Which alcohol gives iodoform test? Methanol Ethanol Propanol Tertiary alcohol Ethanol gives CHI₃. Q13. Which phenol undergoes Kolbe reaction? Sodium phenoxide Phenol Benzene Toluene Carboxylation reaction. Q14. Reimer–Tiemann reaction introduces: −COOH −CHO −NO₂ −OH Formyl group added to phenol. Q15. Which alcohol is least reactive towards HCl? Primary Secondary Tertiary All equal Primary forms unstable carbocation. Q16. Which compound forms anisole? Phenol + CH₃Cl Phenol + CH₃OH Benzene + CH₃Cl Alcohol + HCl Williamson synthesis. Q17. Which alcohol forms ester with acid? Primary Secondary Tertiary All of these Esterification reaction. Q18. Which compound gives pink colour with FeCl₃? Ethanol Phenol Ether Benzene Characteristic phenol test. Q19. Ether cleavage occurs with: HCl HI NaOH H₂O Strong acid required. Q20. Which alcohol shows maximum boiling point? Methanol Ethanol Propanol Butanol Higher molecular mass → stronger intermolecular forces. Q21. Phenol is ortho-para directing because of: −I effect +R effect −R effect Steric effect Lone pair donation. Q22. Which reagent oxidises phenol to quinone? KMnO₄ PCC HCl NaOH Strong oxidising agent. Q23. Which alcohol does not undergo oxidation easily? Primary Secondary Tertiary All No α-H. Q24. Which compound is least acidic? Phenol Ethanol Water Carboxylic acid Alcohol least acidic here. Q25. Which reaction forms ether from alcohol? Dehydration at 140°C Oxidation Reduction Nitration Intermolecular dehydration. Q26. Which compound shows maximum hydrogen bonding? Ether Alcohol Alkane Alkene Presence of –OH. Q27. Which alcohol reacts fastest with Na? Methanol Ethanol Phenol Tertiary alcohol Phenol more acidic. Q28. Which compound gives violet colour with FeCl₃? Phenol Ether Alcohol Alkane Phenol test. Q29. Which ether is symmetrical? CH₃–O–CH₃ CH₃–O–C₂H₅ C₂H₅–O–C₃H₇ All Same alkyl groups. Q30. Alcohols are important because they: Undergo oxidation Undergo dehydration Form esters All of these Versatile functional group. Submit Paper Conclusion: Why Part 16 (Alcohols, Phenols & Ethers) Is a High-Scoring Organic Chemistry Chapter for NEET The chapter Alcohols, Phenols & Ethers holds a strategically important position in the NEET Organic Chemistry syllabus. It connects fundamental concepts of reactivity and acidity with real exam-oriented applications. NEET UG Chemistry Practice Paper – Part 16 is designed to transform this chapter from a memory-based topic into a concept-driven scoring area. One of the biggest strengths of this chapter is its balance between theoretical clarity and reaction-based application. NEET frequently asks questions related to acidity order, hydrogen bonding, boiling point comparison, and reaction trends. Students who only memorize reactions often struggle with conceptual comparison questions. This practice paper reinforces the logic behind acidity (resonance stabilization in phenol), oxidation patterns (primary vs secondary vs tertiary alcohols), and substitution behavior. A major scoring segment in NEET from this chapter involves oxidation and dehydration reactions of alcohols. Understanding how primary alcohols oxidize to aldehydes and acids, how secondary alcohols form ketones, and why tertiary alcohols resist oxidation is essential. Part 16 strengthens these distinctions through repeated exposure to structured MCQs. Another critical area is phenol chemistry, which is heavily tested in NEET. Questions related to FeCl₃ test, bromine water reaction, Kolbe’s reaction, and Reimer–Tiemann reaction are very common. Students often confuse reaction conditions or products. Practicing this paper ensures that these named reactions become second nature, reducing hesitation during the exam. The chapter also reinforces understanding of electrophilic substitution in phenols. Since phenol is an ortho-para directing group due to its +R effect, many NEET questions revolve around predicting product orientation. Part 16 strengthens this conceptual base, which also helps in later aromatic chemistry chapters. Ethers, although comparatively simpler, contribute important exam questions—especially regarding Williamson synthesis and cleavage reactions with HI or HBr. Students must clearly understand that ether cleavage depends on the nature of the alkyl group and reaction conditions. This practice paper systematically covers these nuances. Another important benefit of solving this set is improved clarity in intermolecular forces and boiling point trends. Alcohols show hydrogen bonding, ethers show weaker intermolecular interactions, and alkanes show only van der Waals forces. NEET often frames conceptual physical property questions from this area, and Part 16 ensures students are prepared. The structured 30-question format enhances speed, reaction recall, and exam temperament. Students learn to quickly identify whether a question is testing acidity, mechanism, oxidation level, or named reaction. This improves both accuracy and time management—two critical factors in NEET success. The instant explanation-based feedback system ensures that conceptual errors are corrected immediately. If a student misjudges acidity order or reaction conditions, the correction becomes part of active learning. Organic Chemistry builds cumulatively, so correcting mistakes at this stage prevents confusion in advanced chapters like aldehydes, ketones, carboxylic acids, and amines. Most importantly, mastering Alcohols, Phenols & Ethers creates a strong foundation for understanding functional group

NEET UG Chemistry Practice Paper – Part 15 (Haloalkanes & Haloarenes) is designed to strengthen students’ understanding of substitution and elimination mechanisms. This chapter is highly important for NEET due to its focus on SN1, SN2, E1, E2 reactions, reactivity trends, and name reactions, all of which are frequently tested. Total Questions: 30 | Total Marks: 120 Q1. Reactivity of alkyl halides towards SN1 follows: 1° > 2° > 3° 3° > 2° > 1° 2° > 3° > 1° All equal Tertiary carbocations are most stable. Q2. Which halogen is best leaving group? F Cl Br I I⁻ is weakest base and best leaving group. Q3. Which solvent favours SN1 reaction? DMSO Acetone Water Ether Polar protic solvents stabilise carbocation. Q4. Which reaction follows SN2 mechanism? Tertiary alkyl halide Primary alkyl halide Aryl halide Benzyl chloride (SN1 only) Less steric hindrance favours SN2. Q5. Which compound undergoes nucleophilic substitution most easily? CH₃Cl CH₃Br CH₃I CH₃F C–I bond is weakest. Q6. Aryl halides are less reactive because: sp³ hybridisation Resonance stabilisation Weak bond Strong +I effect Partial double bond character. Q7. Wurtz reaction gives: Alkene Alkane Alcohol Ketone Coupling reaction using Na in dry ether. Q8. Which reaction forms alcohol from alkyl halide? KCN Aqueous KOH NaNH₂ Zn Nucleophilic substitution. Q9. Which alkyl halide gives maximum elimination? Primary Secondary Tertiary Methyl Tertiary favours E1/E2. Q10. Which compound reacts fastest with alcoholic KOH? CH₃Cl C₂H₅Cl (CH₃)₃CCl C₆H₅Cl Tertiary favours elimination. Q11. Sandmeyer reaction converts: Alkyl halide to amine Diazonium salt to aryl halide Alcohol to alkene Alkene to alcohol Cu salts replace diazonium group. Q12. Finkelstein reaction is used to prepare: Alkyl fluoride Alkyl chloride Alkyl bromide Alkyl iodide NaI in acetone. Q13. Which halide gives positive carbylamine test? Primary amine Secondary amine Tertiary amine Amide Primary amines give foul smell. Q14. Which compound is most reactive in nucleophilic substitution? Vinyl chloride Allyl chloride Chlorobenzene Methyl chloride Resonance stabilises intermediate. Q15. Which compound forms Grignard reagent? Aryl halide Alkyl halide Vinyl halide All of these RMgX formed from alkyl halides. Q16. Which compound undergoes hydrolysis fastest? CH₃Cl C₂H₅Cl (CH₃)₃CCl C₆H₅Cl Tertiary carbocation stable. Q17. Which halogen has strongest C–X bond? C–F C–Cl C–Br C–I C–F bond is strongest. Q18. Which reagent is used to prepare alkyl fluoride? AgF NaI KBr ZnCl₂ Swarts reaction. Q19. Which alkyl halide undergoes SN2 fastest? Tertiary Secondary Primary Aryl Less steric hindrance. Q20. Which compound does NOT undergo SN1? Tertiary alkyl halide Secondary alkyl halide Primary alkyl halide Benzyl halide Primary carbocation unstable. Q21. Which compound undergoes E2 reaction? With strong base With weak base With polar protic solvent Without base Strong base favours E2. Q22. Which reaction forms alkene from alkyl halide? Hydrolysis Elimination Addition Oxidation Alcoholic KOH. Q23. Which is most reactive towards nucleophile? Benzyl chloride Chlorobenzene Vinyl chloride Toluene Resonance stabilises carbocation. Q24. Which reagent gives elimination predominately? Aqueous KOH Alcoholic KOH Water NaCl Alcoholic medium favours elimination. Q25. Which reaction gives coupling product? Wurtz Sandmeyer Finkelstein Swarts Two alkyl groups couple. Q26. Which halide reacts fastest with NaI in acetone? Primary Secondary Tertiary Aryl SN2 favoured. Q27. Which compound undergoes nucleophilic aromatic substitution? Chlorobenzene Nitrobenzene p-Nitrochlorobenzene Toluene −NO₂ activates ring. Q28. Which halide forms alcohol via SN1? Tertiary Primary Vinyl Aryl Stable carbocation formed. Q29. Which is least reactive? Allyl chloride Benzyl chloride Chlorobenzene Tert-butyl chloride Resonance stabilised C–Cl bond. Q30. Haloalkanes are important because they: Undergo substitution Undergo elimination Form Grignard reagents All of these They are versatile intermediates. Submit Paper Conclusion: Why Part 15 (Haloalkanes & Haloarenes) Is Critical for Scoring in NEET Organic Chemistry The chapter Haloalkanes & Haloarenes is one of the most strategically important sections of Organic Chemistry for NEET aspirants. It connects foundational concepts from General Organic Chemistry with real reaction mechanisms, making it a bridge between theory and application. NEET UG Chemistry Practice Paper – Part 15 is carefully designed to strengthen this bridge and transform a potentially confusing chapter into a high-scoring opportunity. One of the biggest reasons this chapter matters is its heavy focus on reaction mechanisms. NEET frequently tests SN1, SN2, E1, and E2 mechanisms directly or indirectly. Students often struggle to differentiate when substitution will dominate and when elimination will occur. Through systematic practice in Part 15, learners clearly understand how substrate structure, solvent type, nucleophile strength, and leaving group ability influence the reaction pathway. This clarity dramatically improves accuracy in mechanism-based questions. Another key area covered in this paper is the stability of intermediates, especially carbocations. Since SN1 reactions depend on carbocation stability, questions often revolve around comparing tertiary, secondary, primary, allylic, and benzylic systems. Practicing such MCQs strengthens students’ ability to predict reactivity trends logically rather than guessing. This analytical approach is crucial for NEET, where subtle conceptual differences determine the correct option. The paper also reinforces understanding of leaving group ability and bond strength trends. Many students memorize that I⁻ is a better leaving group than Cl⁻ but fail to connect it to bond dissociation energy and stability of the leaving species. By solving structured questions in this practice set, students internalize these trends in a meaningful way, which helps them tackle unfamiliar variations in the exam. A particularly important section of this chapter involves aryl halides and their reduced reactivity. NEET frequently tests why chlorobenzene is less reactive toward nucleophilic substitution due to resonance stabilization and partial double bond character. Without conceptual clarity, students often confuse haloalkanes with haloarenes. Part 15 ensures that this distinction becomes crystal clear. The inclusion of name reactions such as Wurtz reaction, Finkelstein reaction, Swarts reaction, and Sandmeyer reaction further strengthens exam readiness. These reactions are commonly asked either directly or as part of multi-step conversion problems. Practicing them in MCQ format improves recall speed and reaction identification skills. Another major benefit of solving this practice paper is improved understanding of Grignard reagent formation and reactivity, one of the most important synthetic tools in Organic Chemistry. Even if detailed Grignard reactions appear later in the syllabus, mastering their origin in haloalkanes