Chemistry · JEE

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 Previous Year Questions for JEE

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Q1ChemistryUnit 6: Equilibrium

K_{a}

for acetic acid in water is

1.7 \times

10^{-5}

25^{\circ} \mathrm{C} .

The

\mathrm{pH}

of a mixture of 25

\mathrm{ml}

0.02 \mathrm{N}

acetic acid and

2.5 \mathrm{ml}

of 0.1N NaOH (neglecting volume change) will be

(\log 1.7=0.23)

Q2ChemistryUnit 6: Equilibrium

Assertion Assertion: A solution of

N H_{4} C l

in water is acidic in nature. Reason Reason : Ammoniun ions undergo hydrolysis to form

N H_{4} O H

Q3ChemistryUnit 6: Equilibrium

1.2 mol of

\boldsymbol{C H}_{3} \boldsymbol{N} \boldsymbol{H}_{2}\left(\boldsymbol{p} \boldsymbol{K}_{\boldsymbol{b}}=\boldsymbol{3} . \boldsymbol{3}\right)

is added to 0.8 moles of

H C l

and the solution is diluted to one litre, resulting

\boldsymbol{p} \boldsymbol{H}

of solution is:

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Why practise PYQs for 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?

PYQs reveal recurring concepts, common traps, and the difficulty level JEE expects. Solving them builds exam temperament and time management.

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Our bank includes exam-style MCQs aligned with JEE Main Chemistry syllabus for 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, covering the same topics as previous year papers.

How should I use PYQs for Equilibrium?

Solve timed sets, review every explanation, note weak subtopics, then revisit with focused practice on Goodmarks.

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