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  9. Q17

MPSC State Service 2019 · GS · Question 17 of 97

Which of the following is not a Lewis acid?

Chemistry

  1. ABarium chloride (BaCl2)Correct
  2. BBoron trichloride (BCI3)
  3. CBeryllium chloride (BeCl2)
  4. DBoron trifluoride (BF3)

Answer: A. Barium chloride (BaCl2)

Explanation

BCl₃, BeCl₂ and BF₃ are electron-deficient Lewis acids; barium chloride is not.

Source: MPSC Rajyaseva Prelims 2019 – GS Paper I (Set A), official paper

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