8th std Science Chapter 1 Measurement and Units MCQs

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Below is a set of multiple-choice questions (MCQs) with answers, covering the key concepts from the "Measurement and Units" chapter. The questions include both foundational and application-level questions to ensure comprehensive preparation for examinations. Each question has four options, with the correct answer and a detailed explanation provided. These MCQs cover foundational concepts, unit conversions, and practical applications, ensuring students are well-prepared for examinations.

Samples are:

1. What is a physical quantity?
A) A property that cannot be measured
B) A characteristic of an object that can be measured
C) A unit used for measurement
D) A tool for measuring objects
 Answer: B
Explanation: A physical quantity is a measurable characteristic, such as length, mass, or time, expressed with a numerical value and a unit, as explained in the chapter.

2. Which of the following is a fundamental quantity?
A) Area
B) Volume
C) Length
D) Density
Answer: C 
Explanation: Length is one of the seven fundamental quantities listed in the chapter, while area, volume, and density are derived quantities. 

3. Which physical quantity is measured when a tailor takes body measurements?
A) Mass
B) Length
C) Time
D) Temperature
Answer: B
Explanation: A tailor measures length to determine the size of clothes, as mentioned in the chapter’s table of situations.

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