Chemistry
The crystalline substance that does not contain water of crystallization is:
- Plaster of paris
- Potash alum
- Potassium permanganate
- Epsom salt
Answer
Potassium permanganate
Reason — The crystalline shape of a substance is not necessarily the result of the presence of water of crystallization. In fact, there are number of crystalline solids that crystallize from water without holding any water of crystallization. For example: Potassium permanganate
Related Questions
With a rise in temperature, the solubility of sodium chloride will:
- Increase rapidly
- Decrease
- Remain the same
- Increase slightly
The solubility of which of the following substances decreases with a rise in temperature :
- Potassium chloride
- Hydrated sodium sulphate
- Calcium hydroxide
- Potassium nitrate
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