Chemistry
The salt which gives water vapour on heating is called :
- Hydrated
- Hygroscopic
- Deliquescent
- Anhydrous
Answer
Hydrated
Reason — Hydrated salts are salts that contain water molecules as part of their crystalline structure. When these salts are heated, they lose their water molecules, which evapourate as water vapour. For example, copper(II) sulphate pentahydrate (CuSO₄·5H₂O) gives off water vapour when heated.
Related Questions
Give reason:
Table salt becomes moist during rainy season.
Give reason:
On opening a bottle of cold drink, a fizz sound is heard.
Which of the following salts cause permanent hardness of water ?
- Calcium sulphate
- Calcium bicarbonate
- Sodium chloride
- Magnesium nitrate
The substance which can remove permanent hardness of water is :
- sodium bicarbonate
- sodium carbonate
- sodium hydroxide
- sodium chloride