NEET UG – Chemistry Practice Paper (Previous Years’ Questions) Part 5 | Topic: Miscellaneous
Total Questions: 30 | Total Marks: 120 Q1. Which factor does NOT affect the rate of a chemical reaction? Concentration Temperature Catalyst Enthalpy of reaction Rate depends on kinetic factors, not thermodynamic enthalpy. Q2. Which quantum number decides the size of an orbital? n l m s Principal quantum number determines orbital size. Q3. Which of the following is a colligative property? Viscosity Osmotic pressure Surface tension Refractive index Colligative properties depend on number of particles. Q4. Which molecule is paramagnetic? CO N₂ O₂ CO₂ O₂ has two unpaired electrons. Q5. Which solution will have maximum elevation in boiling point? 0.1 M glucose 0.1 M urea 0.1 M NaCl 0.1 M CaCl₂ CaCl₂ produces maximum particles (i = 3). Q6. Which element has highest electronegativity? Oxygen Nitrogen Fluorine Chlorine Fluorine is the most electronegative element. Q7. Which gas has the highest rate of diffusion? CO₂ NH₃ O₂ SO₂ NH₃ has the lowest molar mass. Q8. Which compound is used as an antifreeze? Methanol Ethylene glycol Glycerol Ethanol Ethylene glycol lowers freezing point. Q9. Which compound undergoes SN2 reaction fastest? CH₃Cl C₂H₅Cl (CH₃)₃CCl C₆H₅Cl Least steric hindrance favors SN2. Q10. Which reaction is first order? Radioactive decay SN1 reaction SN2 reaction Combustion Rate depends on substrate concentration. Q11. Which metal is extracted by electrolysis? Iron Aluminium Copper Zinc Aluminium is extracted by Hall–Héroult process. Q12. Which ion has highest hydration energy? Na⁺ K⁺ Li⁺ Cs⁺ Smallest size → highest hydration energy. Q13. Which polymer is biodegradable? PVC Nylon-6,6 PHBV Bakelite PHBV is biodegradable. Q14. Which compound shows geometrical isomerism? Ethane Propane But-2-ene Methane Restricted rotation about C=C bond. Q15. Which gas is used in fire extinguishers? O₂ CO₂ N₂ H₂ CO₂ cuts off oxygen supply. Q16. Which compound has maximum dipole moment? BF₃ CO₂ NH₃ CCl₄ Trigonal pyramidal shape. Q17. Which compound shows keto–enol tautomerism? Ethane Acetaldehyde Methanol Acetic acid Aldehydes show keto–enol tautomerism. Q18. Which element has highest first ionization energy? Na Mg Al Ne Noble gases have very high ionization energy. Q19. Which reagent gives silver mirror test? Fehling’s solution Tollens’ reagent Benedict’s reagent Schiff’s reagent Tollens’ reagent gives silver mirror. Q20. Which oxide is neutral? CO SO₂ Na₂O Al₂O₃ CO is a neutral oxide. Q21. Which solution has highest pH? 0.1 M HCl 0.1 M NaOH 0.1 M NH₄Cl 0.1 M CH₃COOH Strong base gives highest pH. Q22. Which process increases entropy? Freezing Condensation Vaporization Crystallization Gas phase has maximum disorder. Q23. Which electrolyte has highest molar conductivity at infinite dilution? NaCl HCl CH₃COOH NH₄OH H⁺ ion has very high mobility. Q24. Which compound is used as antacid? NaOH Mg(OH)₂ HCl NH₄OH Milk of magnesia neutralizes acid. Q25. Which compound shows optical isomerism? 2-bromopropane 2-butanol Ethanol Propane Presence of chiral carbon. Q26. Which is the strongest oxidizing agent? KMnO₄ K₂Cr₂O₇ O₃ H₂O₂ Ozone is a very strong oxidizer. Q27. Which metal is liquid at room temperature? Sodium Mercury Gallium Cesium Mercury is liquid at room temperature. Q28. Which salt causes temporary hardness of water? CaCl₂ MgSO₄ Ca(HCO₃)₂ Na₂CO₃ Bicarbonates cause temporary hardness. Q29. Which polymer is used for making non-stick cookware? PVC Bakelite Teflon Nylon Teflon is chemically inert. Q30. Which change shows maximum increase in entropy? Solid → Liquid Liquid → Gas Solid → Gas Gas → Liquid Solid to gas causes maximum disorder. Submit Paper Conclusion: Why Part 5 Is a Critical Milestone in NEET Chemistry Preparation NEET UG Chemistry Practice Paper – Part 5 (Miscellaneous) is designed for aspirants who are transitioning from basic practice to exam-level mastery. At this stage of preparation, the focus is no longer just on understanding individual concepts, but on applying them accurately, quickly, and consistently under mixed-topic conditions—exactly how NEET tests Chemistry. Part 5 strengthens a student’s ability to handle conceptual variety without hesitation. The questions deliberately move across Physical, Organic, and Inorganic Chemistry, forcing quick shifts between kinetics, thermodynamics, colligative properties, atomic structure, chemical bonding, organic reaction mechanisms, polymers, environmental chemistry, and everyday chemistry applications. This mixed approach trains the mind to adapt instantly, reducing the risk of confusion during the actual exam. A major advantage of this paper is its emphasis on high-yield NEET concepts. Topics such as rate of reaction, electronegativity trends, hydration energy, gas laws, stereochemistry, acidity–basicity, redox behavior, entropy changes, and qualitative organic tests are repeatedly tested in NEET. By practicing these concepts in a PYQ-style format, students reinforce fundamentals while learning how NEET frames questions around them. Part 5 also plays a crucial role in improving accuracy and elimination skills. The options are intentionally close to one another, requiring careful analysis rather than guesswork. Regular practice with such questions helps students recognize common traps, eliminate incorrect choices logically, and avoid silly mistakes that often cost valuable marks. Another key strength of this paper is the instant explanation-based feedback. Each explanation ensures that even incorrect attempts become learning opportunities. This prevents conceptual gaps from carrying forward and helps build long-term retention—essential for performing consistently across multiple mock tests and on exam day. Equally important is the exam temperament this paper helps develop. Solving a complete 30-question mixed set in one sitting builds focus, stamina, and time-management skills. Students gradually become comfortable with the pace and pressure of NEET, which significantly reduces anxiety during the actual examination. In summary, Part 5 acts as a performance-sharpening tool. It strengthens conceptual clarity, improves speed and accuracy, enhances elimination techniques, and prepares students mentally for the unpredictability of NEET Chemistry. For aspirants aiming to turn Chemistry into a reliable scoring section, Part 5 is an essential step toward true exam readiness.









