Chemistry · JEE

Chemical equations and stoichiometry Previous Year Questions for JEE

8+ syllabus-aligned questions available

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Goodmarks offers 8+ JEE-style PYQs for Chemical equations and stoichiometry with detailed solutions. While official past papers rotate yearly, our bank covers the same concepts, difficulty, and question formats tested in JEE Chemistry.

Previous year questions are the fastest way to understand how Chemical equations and stoichiometry is tested in JEE. Practise 8+ exam-pattern MCQs modelled on JEE Main and Advanced, with full solutions for every question.

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Q1ChemistryUnit 1: Some Basic Concepts in Chemistry

Volume of

N_{2},

in litres, liberated on heating 6.4 g of

N H_{4} N O_{2}

is:

Q2ChemistryUnit 1: Some Basic Concepts in Chemistry

10 \mathrm{L}

of hard water required

0.56 \mathrm{g}

of lime (CaO) for removing hardness. Hence, the temporary hardness in ppm (part per million) of

C a C O_{3}

is :

Q3ChemistryUnit 1: Some Basic Concepts in Chemistry

\mathbf{2} \boldsymbol{C} \boldsymbol{a}_{3}\left(\boldsymbol{P} \boldsymbol{O}_{4}\right)_{2}+\boldsymbol{6} \boldsymbol{S} \boldsymbol{i} \boldsymbol{O}_{2}+\mathbf{1 0} \boldsymbol{C} \rightarrow \boldsymbol{P}_{4}+

\boldsymbol{C a} \boldsymbol{S i O}_{3}+\mathbf{1 0 C O}

Which coefficient balances the reaction given above?

Q4ChemistryUnit 1: Some Basic Concepts in Chemistry

Consider the four statements below concerning limiting reactants in chemical systems. Identify the one that correctly describes the role of the limiting reactant.

Q5ChemistryUnit 1: Some Basic Concepts in Chemistry

What is the correct formula for calcium chloride?

Q6ChemistryUnit 1: Some Basic Concepts in Chemistry

Which of the following rules regarding the significant figures and calculations involving them is not correct?

Q7ChemistryUnit 1: Some Basic Concepts in Chemistry

Round 984 liters to 2 significant digits.

Q8ChemistryUnit 1: Some Basic Concepts in Chemistry

10 \mathrm{ml}

\mathrm{CO}

is mixed with

25 \mathrm{ml}

air having 20 per cent

O_{2}

by volume. What would be the final volume if none of

\mathrm{CO}

and

O_{2}

is left after the reaction?

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Frequently asked questions

Why practise PYQs for Chemical equations and stoichiometry?

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 Chemical equations and stoichiometry, covering the same topics as previous year papers.

How should I use PYQs for Some Basic Concepts in Chemistry?

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

Are PYQ solutions step-by-step?

Yes. Every question includes the correct answer and a detailed explanation showing the reasoning.