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Chemistry Medium CSS FPSC PPSC Uploaded: 14 Jul 2026

Which isotope of carbon is used in radiocarbon dating?

  • A Carbon-12
  • B Carbon-13
  • C Carbon-11
  • D Carbon-14
Correct Answer: Option D — Carbon-14
Explanation:
Carbon-14 is a radioactive isotope used in radiocarbon dating of organic materials because it decays at a known rate allowing scientists to estimate the age of ancient samples.
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