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  9. Q41

WBCS 2022 · Question 41 of 191

Which of the following isotopes is used in dating archaeological findings?

Science - Physics

  1. A²³⁵₉₂U
  2. B¹⁴₆CCorrect
  3. C³₁H
  4. D¹⁸₈O

Answer: B. ¹⁴₆C

Explanation

Official WBPSC key (Series A): (B) ¹⁴₆C. Carbon-14 (¹⁴C) is used in radiocarbon dating of archaeological finds.

Source: WBCS (Exe) etc. (Prelim) 2022, Series A

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