Chemistry
Which of the following is a deliquescent salt ?
- CuSO4
- FeCl3
- KCl
- ZnSO4
Water
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Answer
FeCl3
Reason — FeCl3 absorbs moisture when exposed to the atmosphere and ultimately dissolves in the absorbed water. Hence, it is a deliquescent salt.
Copper(II) sulphate is not deliquescent in its normal crystalline form (it is hygroscopic only in hydrated form). Potassium chloride is stable in air and does not absorb moisture. Zinc sulphate is hygroscopic in hydrated form but not strongly deliquescent.
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Related Questions
Table salt becomes sticky in the presence of moisture because :
- It is deliquescent
- It is hygroscopic
- It contains impurities which are deliquescent
- It is a good drying agent.
Which of the following substances can act as a dehydrating as well as a drying agent.
- Oxalic acid
- Conc. nitric acid
- Washing soda
- Conc sulphuric acid
If a salt on heating does not gives water vapour, then that salt is:
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- Hydrated
- Anhydrous
The salt which is the cause of hardness in water:
- Sodium sulphate
- Magnesium bicarbonate
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- Calcium nitrate