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Chemical & Ionic Equilibrium NEET UG Practice Paper Chemistry (PYQs) Part 11

Chemical & Ionic Equilibrium NEET UG Practice Paper Chemistry (PYQs) Part 11

Chemical & Ionic Equilibrium NEET UG Practice Paper

NEET UG – Chemistry Practice Paper (Previous Years’ Questions)

Part 11 | Topic: Chemical & Ionic Equilibrium

Total Questions: 30 | Total Marks: 120

Q1. Chemical equilibrium is:




Forward and backward reactions occur simultaneously.

Q2. The equilibrium constant depends on:




K depends only on temperature.

Q3. For reaction aA + bB ⇌ cC + dD, Kc is:




Products over reactants.

Q4. Value of K >> 1 indicates:




Equilibrium lies towards products.

Q5. Le Chatelier’s principle applies when:




Applies only to equilibrium systems.

Q6. Addition of catalyst:




Catalyst does not change position of equilibrium.

Q7. For exothermic reaction, increase in temperature:




Heat acts as a product.

Q8. Relationship between Kp and Kc is:




n = Δmoles of gaseous species.

Q9. pH of pure water at 25°C is:




Neutral water has pH 7.

Q10. Which is a strong acid?




HCl ionises completely.

Q11. Ionic product of water at 25°C is:




Kw = 10⁻¹⁴.

Q12. Buffer solution resists change in:




Buffer maintains pH.

Q13. Which is an acidic buffer?




Weak acid + its salt.

Q14. Solubility product is applicable to:




Applies to low-solubility salts.

Q15. Precipitation occurs when:




Ionic product exceeds Ksp.

Q16. pH of 10⁻³ M HCl is:




pH = −log[H⁺].

Q17. Common ion effect reduces:




Presence of common ion suppresses dissociation.

Q18. Strong base among the following is:




NaOH dissociates completely.

Q19. For weak acid, pH depends on:




pH = ½(pKa − log C).

Q20. Which salt hydrolyses in water?




Salt of weak base + strong acid.

Q21. Equilibrium constant for reverse reaction is:




Kreverse = 1/Kforward.

Q22. Increasing pressure favours side with:




Le Chatelier’s principle.

Q23. pOH + pH equals:




At 25°C, pH + pOH = 14.

Q24. Which is a weak electrolyte?




Partially ionises.

Q25. Degree of dissociation increases with:




Ostwald’s dilution law.

Q26. Which salt gives basic solution?




Salt of strong base + weak acid.

Q27. Equilibrium constant is dimensionless when:




Activities are unitless.

Q28. Which salt will precipitate first?




Lower Ksp → earlier precipitation.

Q29. pH of acidic buffer is:




Acidic buffer has pH less than 7.

Q30. Equilibrium shifts when:




Any stress shifts equilibrium.

Conclusion: Why Part 11 (Chemical & Ionic Equilibrium) Is a Must-Master Section for NEET Aspirants

NEET UG Chemistry Practice Paper – Part 11, focused on Chemical Equilibrium and Ionic Equilibrium, targets one of the most concept-sensitive and repeatedly tested areas of Physical Chemistry. This chapter plays a crucial role in NEET because it connects fundamental ideas of reversibility, reaction direction, acids–bases, buffers, solubility, and equilibrium shifts—all of which demand clarity rather than rote memorization.

The biggest strength of Part 11 lies in its balanced integration of chemical equilibrium and ionic equilibrium concepts. NEET often mixes these ideas within the same paper, and students who treat them separately tend to struggle. This practice paper trains aspirants to smoothly move between equilibrium constants, Le Chatelier’s principle, pH calculations, buffers, common ion effect, and solubility product—exactly as required in the actual exam.

Part 11 strongly reinforces core NEET scoring concepts such as the dependence of equilibrium constant on temperature, the effect of pressure and concentration changes, Kc–Kp relationships, and equilibrium direction prediction. On the ionic equilibrium side, it builds confidence in pH, pOH, Kw, Ka, Kb, buffer solutions, salt hydrolysis, and Ksp-based precipitation logic. These are high-frequency areas where NEET questions are often simple in appearance but unforgiving of weak fundamentals.

Another key benefit of this paper is its focus on conceptual traps. Many students lose marks due to confusion between equilibrium shift and equilibrium constant, misunderstanding buffer action, or incorrect interpretation of common ion effect. By solving these carefully framed MCQs, students learn to avoid such mistakes and develop a sharper analytical approach.

The instant explanation-based feedback ensures that errors are corrected immediately, preventing misconceptions from becoming habits. This is especially important in equilibrium-related topics, where a single wrong assumption can affect multiple questions.

Part 11 also helps students build exam temperament by handling a full mixed set of equilibrium questions in one sitting. This improves time management, confidence, and decision-making under pressure—skills that directly impact NEET performance.

In conclusion, Part 11 is not just a revision exercise; it is a concept-stabilizing and accuracy-building tool. It strengthens fundamentals, sharpens logical thinking, and prepares students to handle equilibrium-based NEET questions with confidence. For aspirants aiming to secure maximum marks in Physical Chemistry, mastering Chemical and Ionic Equilibrium through Part 11 is an essential step toward NEET success.

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