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

11+ syllabus-aligned questions available

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Previous year questions are the fastest way to understand how 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 is tested in JEE. Practise 11+ exam-pattern MCQs modelled on JEE Main and Advanced, with full solutions for every question.

Syllabus context

Part of Equilibrium in JEE Main Chemistry.

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Q1ChemistryUnit 6: Equilibrium

100ml of a solution of HCl with pH value 3 is diluted with

400 \mathrm{ml}

of water. The new pH of the solution is?

Q2ChemistryUnit 6: Equilibrium

A solution contains

10 \mathrm{mL}

0.1 \mathrm{N}

NaOH and

10 \mathrm{mL}

0.05 \mathrm{Na}_{2} \mathrm{SO}_{4} .

pH of this solution is

Q3ChemistryUnit 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)

Q4ChemistryUnit 6: Equilibrium

A solution having hydrogen ion concentration is

0.0005 g

eqvt/litre, its

p O H

Q5ChemistryUnit 6: Equilibrium

Assertion At

25^{\circ} C

, the pH of

10^{-8} M

HClis 8 Reason pH of acidic solution is always below 7

\operatorname{at} 25^{\circ} C

Q6ChemistryUnit 6: Equilibrium

p H

of water is 7 when any substance

Y

is dissolved in water then

p H

becomes 13. Substance

Y

is a salt of:

Q7ChemistryUnit 6: Equilibrium

Oxides of sulphur present in the atmosphere are washed down by rain and would result in:

Q8ChemistryUnit 6: Equilibrium

The pH of

D_{2} O

and

H_{2} O

298 \mathrm{K}

is:

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Frequently asked questions

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.

Does Goodmarks have actual JEE past papers?

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.

Are PYQ solutions step-by-step?

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