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Q84 (NDA-I/2025) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic mechanics concepts Answer Verified

Match List I with List II and select the answer using the code given below the Lists : List I (Physical Quantity) A. Temperature B. Weight C. Mass D. Pressure List II (SI Unit) 1. Kelvin 2. Kilogram 3. Pascal 4. Newton Code :

Result
Your answer: —  Â·  Correct: C
Explanation

The matching of physical quantities to their SI units is as follows: Temperature is measured in Kelvin (K), which is one of the seven SI base units [1]. Weight, being the force of gravity acting on an object, is measured in Newtons (N) [5]. Mass, representing the amount of material in an object, has the SI base unit of kilogram (kg) [3]. Pressure is defined as force per unit area, and its SI unit is the Pascal (Pa), which is equivalent to one Newton per square meter [4]. Therefore, the correct sequence for A-B-C-D is 1 (Kelvin), 4 (Newton), 2 (Kilogram), and 3 (Pascal). This corresponds to Option 3. While mass remains constant regardless of location, weight varies with gravitational strength, though both are fundamental concepts in physical measurement systems [2].

Sources

  1. [1] https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.304a-2017.pdf
  2. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > Snapshots > p. 77
  3. [5] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > 5.5 Weight and Its Measurement > p. 72
  4. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 9: The Amazing World of Solutes, Solvents, and Solutions > How do scientists define density? > p. 141
  5. [4] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 6: Pressure, Winds, Storms, and Cyclones > Snapshots > p. 94
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