Multiple choice

When chlorine is passed over solid slaked lime, which of the following substances is formed?

  1. Plaster of Paris

  2. Bleaching powder

  3. Common salt

  4. Washing soda
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When chlorine gas reacts with dry slaked lime (calcium hydroxide), it produces bleaching powder (calcium oxychloride). The reaction is Ca(OH)2 + Cl2 -> CaOCl2 + H2O.

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