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      Question

      A compound that is a white solid which absorbs water

      vapour from the air is
      A Sodium nitrate Correct Answer Incorrect Answer
      B Calcium chloride Correct Answer Incorrect Answer
      C Sodium carbonate Correct Answer Incorrect Answer
      D Calcium sulphate Correct Answer Incorrect Answer

      Solution

      A compound calcium sulphate (CaSO₄ ) which is a white solid is highly hygroscopic in nature. It has a very remarkable property of setting into a hard, solid mass on wetting with water. 

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