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The SI unit used for the amount of a substance is the:
AMass
BMill
CMole
DMile
Answer & Solution
Correct answer: C. Mole
1. Chemists count particles in bulk, not one by one.
2. The SI unit for amount of substance is used.
3. That unit is the mole.
_Source: syllabus Science Class IX, Chapter 3, Atoms and Molecules._
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