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Atoms and Molecules — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
MCQ
Which of the following statement is true about mole:
  • A
    It is used to calculate number of particles.
  • B
    1 mole is equal to 6.023×1023 particles.
  • C
    It is the chemist's counting unit
  • D
    All of the above
✓

Answer

  1. All of the above

Explanation:

Mole is used to find number of particles.

1 mole is equal to Avogadro number of atoms/ molecules.

It is chemist's counting unit.

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