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Free Measurements MCQs with Answers

262 Measurements MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Physical quantities are expressed with SI base and derived units, while measurement limits are described through accuracy, precision, absolute and percentage error, and significant figures. Dimensional analysis checks equations, derives relationships and detects inconsistent units, but it cannot determine numerical constants or distinguish quantities with identical dimensions.

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Physical Quantities and UnitsErrors and Significant FiguresDimensional Analysis

262 questions · page 14 of 14

261. The SI unit of pressure is.

  • A. Pascal
  • B. mmHg
  • C. torr
  • D. atm

Explanation: The Pascal (Pa) is the SI unit of pressure, defined as one newton per square meter (N/m²).

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Correct answer: Pascal

262. Mercury is 13.6 times as dense as water.

  • A. Qualitative
  • B. Quantitative
  • C. Both A and B
  • D. None of these

Explanation: The statement carries both kinds of information at once. It is qualitative in saying mercury is denser than water, and quantitative in…

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Correct answer: Both A and B
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