Multiple choice

Which of the following is used for dating of fossils?

  1. Radioactive Carbon

  2. CaC2

  3. H2SO4

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Radioactive Carbon (specifically Carbon-14 or C-14) is the primary isotope used for radiocarbon dating of organic fossils up to ~50,000 years old. CaC2 is calcium carbide (an industrial chemical), H2SO4 is sulfuric acid (a strong acid), and neither is used for dating. 'None of these' would incorrectly deny that C-14 is used.

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