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Standard X
Chemistry
Deliquescence
Question

Which one of the following absorbs moisture from atmosphere?
  1. Sodium carbonate
  2. Sal ammoniac
  3. Potassium nitrate
  4. Calcium chloride

A
Sodium carbonate
B
Sal ammoniac
C
Potassium nitrate
D
Calcium chloride
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Solution
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Calcium chloride is used to absorb moisture from atmosphere. Calcium chloride is deliquescent. This means that it can pull large amounts of water from the surrounding environment that it actually dissolves in the absorbed water. Calcium chloride is liquid brine in its natural state.

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