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  9. Q176

WBCS 2024 · Question 176 of 196

Which element although situated outside the Radioactive series, has radioactive isotope?

Science - Chemistry

  1. AFluorine
  2. BIodine
  3. CChlorine
  4. DAll of the aboveCorrect

Answer: D. All of the above

Explanation

Official WBPSC key (Series A): (D) All of the above. Fluorine (F-18), chlorine (Cl-36) and iodine (I-129/I-131) all have radioactive isotopes despite lying outside the radioactive series.

Source: WBCS (Exe) etc. (Prelim) 2024, Series A

← Q175View full paper (196 questions)Q177 →

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