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MHT CET202620 April 2026Evening ShiftChemistrys Block ElementsActual

Choose a false statement regarding the properties of sodium hydroxide.

Options

  1. AIt is highly water soluble.
  2. BIt absorbs atmospheric CO ₂ to form Na ₂ CO ₃ .
  3. Cthe solution of NaOH turns blue litmus red.
  4. DNaOH is a white deliquescent solid.

Correct answer

C. the solution of NaOH turns blue litmus red.

Step-by-step solution

Sodium hydroxide ( NaOH ) is a strong base. Basic solutions turn red litmus paper blue. Therefore, the statement that the solution of NaOH turns blue litmus red is false. The other statements are true: NaOH is highly soluble in water. It reacts with atmospheric CO ₂ to form sodium carbonate ( Na ₂ CO ₃ ). It is a white, deliquescent solid that readily absorbs moisture from the air. Answer: the solution of NaOH turns blue litmus red.

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