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Chemistry · JEE

Important Questions: Equilibrium for JEE

23+ syllabus-aligned questions available

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The most important Equilibrium questions for JEE cover conceptual traps, standard results, and numerical patterns from Meaning of equilibrium, the concept of dynamic equilibrium, Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes, Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta G° in chemical equilibrium, Factors affecting equilibrium: concentration, pressure, temperature, the effect of catalyst, Le Chatelier's principle, and more. Goodmarks provides 23+ high-yield MCQs with full solutions.

Focus on what matters most. These important Equilibrium questions cover high-weightage concepts from Meaning of equilibrium, the concept of dynamic equilibrium, Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes, Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta G° in chemical equilibrium, Factors affecting equilibrium: concentration, pressure, temperature, the effect of catalyst, Le Chatelier's principle, and more — the topics JEE repeats every year.

Subtopics in Equilibrium

  • Meaning of equilibrium, the concept of dynamic equilibrium
  • Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes
  • Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta G° in chemical equilibrium
  • Factors affecting equilibrium: concentration, pressure, temperature, the effect of catalyst, Le Chatelier's principle
  • Ionic equilibrium: Weak and strong electrolytes, ionization of electrolytes
  • Various concepts of acids and bases (Arrhenius, Bronsted Lowry and Lewis) and their ionization, acid-base equilibria (including multistage ionization) and ionization constants
  • Ionization of water, pH scale, common ion effect, hydrolysis of salts and pH of their solutions, the solubility of sparingly soluble salts, solubility products and buffer solutions

Free sample questions

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Q1ChemistryUnit 6: Equilibrium
Which of the correct statement for the given acids?
Q2ChemistryUnit 6: Equilibrium
Which of the following will change the value of the equilibrium constant for the reaction? N2(g)+O2(g)⇋2NO(g)N_{2}(g)+O_{2}(g) \leftrightharpoons 2 N O(g)
Q3ChemistryUnit 6: Equilibrium
A+B⇌C+D,KcA+B \rightleftharpoons C+D, K_{c} for this reaction is 10. If 1,2,3,4 mole/litre of A,B,CA, B, C and DD respectively are present in a container at 25∘C,25^{\circ} C, the direction of reaction will be:
Q4ChemistryUnit 6: Equilibrium
KaK_{a} for acetic acid in water is 1.7×1.7 \times 10−510^{-5} at 25∘C.25^{\circ} \mathrm{C} . The pH\mathrm{pH} of a mixture of 25 ml\mathrm{ml} of 0.02N0.02 \mathrm{N} acetic acid and 2.5ml2.5 \mathrm{ml} of 0.1N NaOH (neglecting volume change) will be (log⁡1.7=0.23)(\log 1.7=0.23)
Q5ChemistryUnit 6: Equilibrium
Ant bite is treated by application of
Q6ChemistryUnit 6: Equilibrium
The state of equilibrium refers to:
Q7ChemistryUnit 6: Equilibrium
A weak mono acidic base is 5%5 \% ionized in 0.01M0.01 M solution. The hydroxide ion concentration in the solution is:
Q8ChemistryUnit 6: Equilibrium
Which property is shown by the alkali sodium hydroxide?

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Frequently asked questions

What makes a Equilibrium question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Equilibrium are high-weightage?

Key areas include Meaning of equilibrium, the concept of dynamic equilibrium, Equilibria involving physical processes: Solid-liquid, liquid-gas, gas-gas and solid-gas equilibria, Henry's law, General characteristics of equilibrium involving physical processes, Equilibrium involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta G° in chemical equilibrium, Factors affecting equilibrium: concentration, pressure, temperature, the effect of catalyst, Le Chatelier's principle, and more. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.

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