Class 6 Science Chapter 5 Assertion Reason Questions – Measurement of Length and Motion

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Last Updated on February 26, 2025 by XAM CONTENT

Hello students, we are providing assertion reason questions for class 6 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 6 science. In this article, you will find assertion reason questions for CBSE Class 6 Science Chapter 5 Measurement of Length and Motion.

New book for CBSE Class 6 Curiosity, Textbook of Science for Grade 6 learners has been published by NCERT as per National Education Policy (NEP) 2020. Curiosity, Textbook of Science for Grade 6, comprises twelve chapters. Through the chapters, learners will embark on a journey that will connect them to the world around and spark curiosity for further exploration.

ChapterMeasurement of Length and Motion
Type of QuestionsAssertion Reason Questions
Nature of QuestionsCompetency Based Questions
BoardCBSE
Class6
SubjectScience
Useful forClass 6 Studying Students
Answers providedYes
Difficulty levelMentioned
Important LinkClass 6 Science Chapterwise Assertion Reason

Assertion Reason on Measurement of Length and Motion

Question 1.
Assertion (A): Motion of a sprinter running on a straight track is rectilinear motion.
Reason (R): Rectilinear motion takes place in a fixed direction.
(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.
Answer: (a) Both (A) and (R) are true and (R) is the correct explanation of (A).

Difficulty Level: Medium

Question 2.
Assertion (A): The objects which move along a straight line are known as rectilinear motion.
Reason (R): The objects which are moving in a circular form are called ‘circular motion’ of that object.
(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.
Answer: (b) Both A and R are true but R is not the correct explanation of A.

Difficulty Level: Easy

Question 3.
Assertion (A): The movement of all the planets around the sun is circular motion.
Reason (R): Motion of a boy sliding down a slope is circular.
(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.
Answer: (c) A is true but R is false.

Difficulty Level: Medium

Question 4.
Assertion (A): A branch of a tree moving ‘to and fro’, motion of a child on a swing and strings of a guitar are examples of periodic motion.
Reason (R): The motion in which an object repeats its motion after the same time is known as periodic motion.
(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.
Answer: (a) Both A and R are true and R is the correct explanation of A.

Difficulty Level: Medium

Question 5.
Assertion (A): When an object moves along a circular path, it is called circular motion.
Reason (R): The movement of the moon around the earth is circular motion.
(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.
Answer: (b) Both (A) and (R) are true and (R) is not the correct explanation of (A).

Difficulty Level: Hard

Question 6.
Assertion (A): International System of Units (S.I. unit) is now being used.
Reason (R): Cubit, hand span vary from person to person.
(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.
Answer: (a) Both (A) and (R) are true and (R) is the correct explanation of (A).

Difficulty Level: Easy

Question 7.
Assertion (A): For measuring the length (L) of an object, choose an appropriate device.
Reason (R): We can measure the length (L) of a curved line directly by using a meter scale.
(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.
Answer: (c) A is true but R is false.

Difficulty Level: Easy

Question 8.
Assertion (A): The unit of any physical quantity which is acceptable to all people as a basic unit is called a standard unit.
Reason (R): SI units are the set of units used to maintain uniformity all over the world.
(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.
Answer: (b) Both A and R are true but R is not the correct explanation of A.

Difficulty Level: Medium

Question 9.
Assertion (A): When an object moves along a circular path, it is called rectilinear motion.
Reason (R): Rectilinear motion takes place in a fixed direction.
(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.
Answer: (d) A is false but R is true.

Difficulty Level: Hard

Question 10.
Assertion (A): For measurements, we use the International System of Units.
Reason (R): kg is the SI unit of length.
(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.
Answer: (c) A is true but R is false.

Difficulty Level: Hard

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Class 6 Science Chapter 5 Assertion Reason Questions – Measurement of Length and Motion

Frequently Asked Questions (FAQs) on Measurement of Length and Motion Assertion Reason Questions

Q1: What are Assertion-Reason questions in Class 6 Science?

A1: Assertion-Reason questions consist of two statements: an Assertion (A) and a Reason (R). Students must determine whether both statements are true and if the reason correctly explains the assertion.

Q2: How do I answer Assertion-Reason questions correctly?

A2: To answer correctly, follow these steps:
Check if both statements are true.
If both are true, see if the reason logically explains the assertion.
Use the standard answer choices (Both true with explanation, Both true without explanation, A true but R false, A false but R true).

Q3: What is the new Science textbook “Curiosity” for Grade 6 about?

A3: The new textbook “Curiosity” for Grade 6 Science introduces students to the world of scientific exploration and discovery. It focuses on fostering curiosity and encouraging students to ask questions, observe the world around them, and engage in hands-on activities to understand scientific concepts.

Q4: What is the best way to prepare for Assertion-Reason questions?

A4: Strengthen your understanding of concepts by studying NCERT books.
Focus on cause-effect relationships in science topics.
Practice Assertion-Reason questions regularly from worksheets, sample papers, and past exams.

Q5: Are there any online resources or tools available for practicing “Measurement of Length and Motion” assertion reason questions?

A5: We provide assertion reason questions for CBSE Class 6 Science on our website. Students can visit the website and practice sufficient case study questions and prepare for their exams. If you want to practice more assertion reason questions, you can visit physics gurukul website.

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