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SSC CGL 2021 PYQ — Question 42

SSC CGL - 18 Aug 2021 - Shift 3 • General Awareness • Q42

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Which of the following is the SI unit for measuring the amount of a substance?

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Correct answer: C

Explanation

The correct answer is option 3 i.e. mole (mol).

  • The "number of discrete atomic-scale particles in it" divided by the "Avogadro constant NA" is the measure of the substance in a particular sample of matter.
  • The SI unit known as the mole is used to quantify quantities of substances.
  • The number of particles that make up a substance is its quantity.
  • The exact number of elementary entities in a mole (mol) is 6.02214076×1023.