Mole Concept and Stoichiometry Assertion and Reasoning Questions for ICSE Class 10 Chemistry Chapter 5

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Last Updated on December 16, 2024 by sanjjeett

Hello students, we are providing assertion and reasoning questions for ICSE class 10 chemistry. Assertion and reasoning questions are the new question format that is introduced in CISCE (ICSE and ISC) board. The resources for ICSE assertion and reasoning questions are very less. So, to help icse board students we have created chapterwise assertion and reasoning questions for class 10 chemistry. In this article, you will find assertion and reasoning questions for ICSE Class 10 Chemistry Chapter 5 Mole Concept and Stoichiometry.

ChapterMole Concept and Stoichiometry
Type of QuestionsAssertion and Reasoning Questions
Nature of QuestionsCompetency Based Questions
BoardICSE
Class10
SubjectChemistry
Useful forClass 10 Studying Students
Answers providedYes
Difficulty levelMentioned
Important LinkICSE Class 10 Chemistry Chapterwise Assertion Reasoning

Assertion and Reasoning Questions on Mole Concept and Stoichiometry for ICSE Class 10 Chemistry

Assertion and reasoning questions are also known as assertion reason questions. Assertion-Reason questions are a type of question format used in ICSE exams where two statements are provided: an Assertion (A) and a Reason (R). Students need to determine whether each statement is true or false and if the Reason correctly explains the Assertion.

Directions:
(a) Assertion and Reason both are correct statements and reason is the correct explanation of the assertion.
(b) Assertion and Reason both are correct statements, but reason is not the correct explanation of the assertion.
(c) Assertion is true, but reason is false.
(d) Assertion is false, but reason is true.

Q. 1. Assertion: The molar mass of a compound is the sum of the atomic masses of all its elements.
Reason: The atomic mass of each element is found on the periodic table in atomic mass units (amu).

Difficulty Level: Medium

Answer: B (Both Assertion and Reason are correct; Reason does not explain Assertion).
Explanation: While both the assertion and reason are correct, the assertion provides a definition, whereas the reason is more of a general fact.

Q. 2. Assertion: The volume of a gas is directly proportional to its temperature at constant pressure.
Reason: This is described by Boyle’s Law.

Difficulty Level: Medium

Answer: C (Assertion is correct; Reason is incorrect).
Explanation: The assertion is correct and refers to Charles’ Law (not Boyle’s Law), which relates volume and temperature at constant pressure.

Q. 3. Assertion: The limiting reagent in a reaction determines the maximum amount of product formed.
Reason: The excess reagent does not affect the product formation.

Difficulty Level: Medium

Answer: A (Both Assertion and Reason are correct; Reason explains Assertion).
Explanation: The limiting reagent determines the amount of product formed, while excess reagents remain unused once the limiting reagent is consumed.

We hope the given ICSE assertion reasoning questions for Mole Concept and Stoichiometry helps you in your learning.

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Topics from which assertion reasoning questions may be asked

  • Gay Lussac’s Law of Combining Volumes
  • Avogadro’s Law
  • Atomicity of hydrogen, oxygen, nitrogen and chlorine
  • Vapour Density and its relation to relative molecular mass
  • Mole and its relation to mass
  • Simple calculations based on chemical equations

Assertion and reasoning questions based on above topics may be asked.

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Topics found difficult by students

  • Conversion of molecular formula to empirical formula.
  • Numerical problems based on mole concept and application of Gay Lussac’s and ogadro’s Laws.
  • Relation between Gram molecular mass and molar volume.
  • Concept of gram atom and gram molecule and the relation with mass and volume.
  • Calculations based on chemical equations.
  • Simple calculations based on relation of mole of mass, volume and Avogadro’s number.

These are the topics from chapter Mole Concept and Stoichiometry generally found difficult by students studying in ICSE Class 10 Chemistry.

Frequently Asked Questions (FAQs) on Mole Concept and Stoichiometry ICSE Class 10 Chemistry Assertion and Reasoning Questions

Q1: What are Assertion and Reasoning questions?

A1: Assertion and Reasoning questions are a type of question format used in ICSE exams where two statements are provided: an Assertion (A) and a Reason (R). Students need to determine whether each statement is true or false and if the Reason correctly explains the Assertion.

Q2: How do Assertion Reasoning questions differ from other question types?

A2: Unlike multiple-choice questions, Assertion-Reason questions require students to analyze the relationship between two statements. It’s not just about knowing the facts but understanding how they connect logically.

Q3: What steps should I follow to correctly answer Assertion and Reasoning questions?

A3: Follow these steps:
Read both statements carefully. Understand what each statement is saying.
Determine the truth value of each statement. Decide if each statement is true or false independently.
Analyze the relationship. If both statements are true, decide whether the Reason (R) correctly explains the Assertion (A).
Choose the correct option. Based on your analysis, select the appropriate answer from the given options.

Q4: What options are typically provided for Assertion and Reasoning questions?

A4: The typical options are:
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, but R is not the correct explanation of A.
C. A is true, but R is false.
D. A is false, but R is true.

Q5: What should I check to determine if the Reason correctly explains the Assertion?

A5: Ensure that the Reason provides a logical explanation for the Assertion. Check if the Reason directly addresses the cause or basis of the Assertion and if they are contextually linked.

Q6: How can I improve my skills in answering Assertion and Reasoning type questions?

A6: Practice regularly with sample questions and past papers. Focus on understanding the concepts thoroughly rather than rote memorization. Analyzing how different facts and concepts interrelate will enhance your ability to correctly answer these questions.

Q7: What are common mistakes to avoid when answering Assertion and Reasoning questions?

A7: Common mistakes include:
Not reading the statements carefully and missing key details.
Assuming the Reason explains the Assertion without checking the logical connection.
Confusing the order or relationship between the statements.
Overthinking and adding information not provided in the question.

Q8: What resources can help me practice Assertion and Reasoning questions for ICSE Class 10 Chemistry?

A8: Use study guides specifically designed for Assertion-Reason questions. Online educational platforms and reference books for ICSE Class 10 Chemistry also offer practice questions and explanations. xamcontent.com/cisce also provides assertion reason questions for ICSE Class 10 Chemistry.

Q9: What is mole of a compound?

A9: A mole of a compound refers to a quantity of that compound containing Avogadro’s number of constituent particles which is approximately 6.022 × 1023, and it represents the number of atoms, molecules, ions, or other entities in one mole of a substance

Q10: When gases react together, their reaction volume bears a simple ratio to each other, under the same conditions of temperature and pressure. Who proposed this gas law?

A10: The statement that “when gases react together, their reaction volumes bear a simple ratio to each other, under the same conditions of temperature and pressure” is known as Gay Lussac’s Law of Combining Volumes. It was proposed by the French chemist Joseph Louis Gay-Lussac in the early 19th century.

Q11: Why is the term relative atomic mass used for atomic mass of an element?

A11: Relative atomic mass is used because it provides a practical and standardized way to describe the masses of atoms and elements. Since the actual mass of an atom of element is extremely small, for comparing the masses of atoms of different elements, the mass of an atom of some light element is fixed as standard and the masses of other atoms are expressed relative to the standard mass, so the term relative atomic mass is used.

Mole Concept and Stoichiometry Assertion and Reasoning Questions for ICSE Class 10 Chemistry Chapter 5

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