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Chemistry Hard ppsc

What is the atomic mass unit based on?

  • A Hydrogen-1
  • B Oxygen-16
  • C Helium-4
  • D Carbon-12
Correct Answer: Option D — Carbon-12
Explanation:
The atomic mass unit is defined as one-twelfth the mass of a Carbon-12 atom. This standard allows scientists to compare the relative masses ...
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Submitted by: PaperMCQs
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