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Mole Concept and Stoichiometry ICSE Class 10 MCQ & Practice Questions

Practice Mole Concept and Stoichiometry MCQs for ICSE Class 10 Chemistry with answers, explanations, chapter revision and related ChemNexa mock tests.

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Mole Concept and Stoichiometry Revision Guide for ICSE Class 10 Chemistry

Mole Concept and Stoichiometry is part of ICSE Class 10 Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.

Use the sample MCQs on this page to check understanding, then attempt the related ChemNexa tests for broader practice. When an answer is wrong, review the explanation and return to the underlying concept before attempting another set.

Important Topics

  • Core definitions and principles
  • Important equations or relationships
  • Common applications and examples
  • Frequently confused concepts
  • Exam-style multiple-choice questions
  • Error review and targeted revision

Revision Tip

Create a one-page summary of trends, structures, reactions, exceptions and key terminology for Mole Concept and Stoichiometry, then test recall with mixed MCQs.

What to practise in Mole Concept and Stoichiometry

Concept Revision

Revise definitions, principles, equations, trends and core ideas from Mole Concept and Stoichiometry before attempting MCQs.

Exam-style MCQs

Use chapter-focused multiple-choice practice to improve accuracy, recall and application for ICSE Class 10 Chemistry.

Performance Practice

Attempt ChemNexa tests, review results and return to weak areas for another round of targeted revision.

Top 20 Mole Concept and Stoichiometry MCQs with Answers

These public questions are selected from the exact Mole Concept and Stoichiometry chapter, screened for topic relevance and deduplicated so repeated versions of the same MCQ are not shown publicly. Use them for quick revision, then sign in to attempt the complete test experience with more questions, results and performance review.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

1. One mole contains:

  • A. 3.01×10^23
  • B. 6.022×10^23
  • C. 9.11×10^23
  • D. 1.00×10^23
Answer: B
Explanation: One mole contains Avogadro's number.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

2. The molar mass of H2O is:

  • A. 16 g
  • B. 18 g
  • C. 20 g
  • D. 22 g
Answer: B
Explanation: 18 g/mol.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

3. The relative molecular mass of CO2 is:

  • A. 28
  • B. 40
  • C. 44
  • D. 46
Answer: C
Explanation: CO2=44.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

4. At STP one mole of gas occupies:

  • A. 11.2 L
  • B. 22.4 L
  • C. 24 L
  • D. 44.8 L
Answer: B
Explanation: 22.4 L.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

5. Number of moles =

  • A. mass/molar mass
  • B. molar mass/mass
  • C. mass×molar mass
  • D. volume×mass
Answer: A
Explanation: n=m/M.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

6. 2 moles O2 contain:

  • A. 6.022×10^23
  • B. 12.044×10^23
  • C. 3.011×10^23
  • D. 24.088×10^23
Answer: B
Explanation: 2N_A molecules.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

7. Empirical formula is:

  • A. Actual formula
  • B. Simplest ratio
  • C. Valency
  • D. Mass
Answer: B
Explanation: Simplest ratio.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

8. Limiting reagent is:

  • A. Excess
  • B. Consumed first
  • C. Catalyst
  • D. Product
Answer: B
Explanation: Limits yield.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

9. Percentage yield =

  • A. actual/theoretical×100
  • B. theoretical/actual×100
  • C. actual×theoretical
  • D. 100/actual
Answer: A
Explanation: Definition.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

10. Formula mass of NaCl:

  • A. 23
  • B. 35.5
  • C. 58.5
  • D. 46
Answer: C
Explanation: 58.5.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

11. One mole CaCO3 mass:

  • A. 56
  • B. 100
  • C. 74
  • D. 40
Answer: B
Explanation: 100 g.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

12. Balanced equations obey:

  • A. Charge
  • B. Mass conservation
  • C. Volume
  • D. Energy
Answer: B
Explanation: Conservation of mass.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

13. Gram molecular volume:

  • A. 11.2
  • B. 22.4
  • C. 44.8
  • D. 24
Answer: B
Explanation: 22.4 L.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

14. Avogadro constant unit:

  • A. mol
  • B. mol^-1
  • C. g
  • D. L
Answer: B
Explanation: mol^-1.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

15. Molar mass O2:

  • A. 16
  • B. 18
  • C. 32
  • D. 64
Answer: C
Explanation: 32.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

16. 36 g water contains moles:

  • A. 1
  • B. 2
  • C. 3
  • D. 4
Answer: B
Explanation: 36/18=2.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

17. 0.5 mol particles:

  • A. 3.011×10^23
  • B. 6.022×10^23
  • C. 1.204×10^24
  • D. 0.5
Answer: A
Explanation: Half Avogadro.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

18. Coefficients indicate:

  • A. Mass
  • B. Mole ratio
  • C. Charge
  • D. Volume
Answer: B
Explanation: Mole ratio.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

19. Theoretical yield:

  • A. Observed
  • B. Maximum possible
  • C. Minimum
  • D. Error
Answer: B
Explanation: Calculated maximum.

ICSE Class 10 Chemistry · Mole Concept and Stoichiometry · Very Very Hard

20. Molar mass NH3:

  • A. 14
  • B. 17
  • C. 18
  • D. 20
Answer: B
Explanation: 17.

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Mole Concept and Stoichiometry Practice Tests

Mole Concept and Stoichiometry Frequently Asked Questions

How should I prepare Mole Concept and Stoichiometry for ICSE Class 10 Chemistry?

Revise the core concepts first, make a short list of important relationships or exceptions, and then solve chapter-focused MCQs while reviewing every error.

How can ChemNexa help with Mole Concept and Stoichiometry practice?

This page provides public sample questions and links to published ChemNexa tests so you can combine quick revision with structured practice.

What should I do after getting an MCQ wrong?

Identify whether the mistake came from a concept gap, calculation, unit, sign, wording or memory error, review that point, and then attempt a similar question again.

Continue with another chapter to build connected concepts and strengthen your overall Chemistry preparation.

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