Hello students, we are providing assertion reason questions for class 7 science. Assertion reason questions are the new question format that is introduced in CBSE board. The resources for assertion reason questions are very less. So, to help students we have created chapterwise assertion reason questions for class 7 science. In this article, you will find assertion reason questions for CBSE Class 7 Science Chapter 5 Physical and Chemical Changes.
| Assertion and Reason | Class 7 Science |
|---|---|
| Useful for | Class 7 Students |
| Subject | Science |
| Chapter | Physical and Chemical Changes Chapter 5 |
| Type of Questions | Assertion and Reason |
| Difficulty Level | Mentioned |
| Format | Question-Answer Format |
| Important Link | Class 7 Science Chapterwise Assertion Reason |
Assertion Reason on Physical and Chemical Changes
Questions:
Q.7. Assertion (A): Burning of any substance is always a chemical change.
Reason (R): A chemical change is also called a chemical reaction.
(a) Both assertion (A) and reason (R) are true and (R) is correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true, but reason (R) is not the correct explanation of assertion (A).
(c) Assertion (A) is true, but reason (R) is false.
(d) Assertion (A) is false, but reason (R) is true.
Difficulty Level: Easy
Ans. Option (b) is correct.
Explanation: Burning is always a chemical change because new substance is formed with different chemical properties than the reacting substances. Burning is accompanied by release of heat and light. It is an irreversible change.
Q.8. Assertion (A): Formation of manure from leaves is a chemical change.
Reason (R): The chemical properties of manure and leaves are similar.
(a) Both assertion (A) and reason (R) are true and (R) is correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true, but reason (R) is not the correct explanation of assertion (A).
(c) Assertion (A) is true, but reason (R) is false.
(d) Assertion (A) is false, but reason (R) is true.
Difficulty Level: Easy
Ans. Option (c) is correct.
Explanation: Formation of manure from leaves is a chemical change the chemical properties of leaves (reactant) are different from the chemical properties of manure (product).
Also Check
- Physical and Chemical Changes Assertion Reason for Class 7 Science
- Acids Bases and Salts Assertion Reason for Class 7 Science
- Heat Assertion Reason for Class 7 Science
- Nutrition in Animals Assertion Reason for Class 7 Science
- Nutrition in Plants Assertion Reason for Class 7 Science
Topics from which assertion reason questions may be asked
- Define physical and chemical changes.
- Give examples of physical and chemical changes.
- Describe physical and chemical properties of substances.
- Define chemical reactions.
- Discuss changes observed during a chemical reaction.
- Explain process of rusting.
- List the ways to prevent process of rusting.
- Describe the process of crystallisation.
- Write chemical equations for various chemical reactions.
In our daily life we come across many changes in our surroundings. For example, dissolving sugar in water, tearing of paper, boiling of water, boiling of egg, burning of wax, curdling of milk, stretching rubber band, etc. These changes can be classified as physical and chemical changes.
For further practice on assertion reason questions related to Class 7 Science Chapter 5 Physical and Chemical Changes, we recommend exploring the link given below.
Frequently Asked Questions (FAQs) on Physical and Chemical Changes Assertion Reason Questions
Q1: What are Assertion-Reason questions?
A1: Assertion-Reason questions are a format used in CBSE exams where two statements are provided: an Assertion (A) and a Reason (R). Students must determine whether each statement is true or false and whether the Reason correctly explains the Assertion.
Q2: How do Assertion-Reason questions differ from other question types?
A2: Unlike multiple-choice questions, Assertion-Reason questions require students to analyze the relationship between two statements. It involves critical thinking to understand how the statements are logically connected.
Q3: What steps should I follow to correctly answer Assertion-Reason questions?
A3: Follow these steps:
Read both statements carefully. Understand the meaning of each statement.
Determine the truth value of each statement. Decide if each statement is true or false independently.
Analyze the relationship. If both statements are true, determine 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-Reason 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 and direct explanation for the Assertion. The Reason should clarify or justify the Assertion, showing a clear cause-and-effect relationship.
Q6: How can I improve my skills in answering Assertion-Reason questions?
A6: Practice is the key. Focus on understanding concepts thoroughly rather than rote memorization. Analyze how different facts and concepts interrelate to enhance your ability to correctly answer these questions.
Q7: Where can I find more assertion-reason questions on physical and chemical changes for practice?
A7: We offer a collection of assertion-reason questions for all classes and subject on our website. These questions are designed to help students practice critical thinking skills and reinforce their understanding of scientific concepts. Visit our website to access these questions and enhance your learning experience. There is another website Physics Gurukul that offers a large collection of assertion reason questions for all classes and subjects.
Q8: What are common mistakes to avoid when answering Assertion-Reason questions?
A8: 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.
Q9: How important is contextual understanding in Assertion-Reason questions?
A9: Contextual understanding is crucial. It helps you determine whether the Reason accurately and logically explains the Assertion within the context of the scientific principles involved.
Q10: Can you provide some tips for answering assertion reason questions for class 7 science correctly?
A10: Here are some tips that will help you to answer correctly:
Understand the Concepts: A thorough understanding of scientific concepts is essential. This will help you determine the truth value of both the Assertion and the Reason.
Identify the Relationship: Focus on identifying whether the Reason provides a valid explanation for the Assertion. Look for cause-and-effect relationships or logical connections.
Practice Regularly: Regular practice will help you become familiar with the format and improve your analytical skills. Use a variety of sources for practice, including textbooks, sample papers, and online resources.
Avoid Overthinking: Stick to the information provided in the statements. Do not add extra information or make assumptions beyond what is given.
