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प्रश्न
Fill in the blank
___________ is the phenomenon by which hydrated salts on exposure to dry air, lose their water of crystallization and crumble to powder.
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उत्तर
Efflorescence is the phenomenon by which hydrated salts on exposure to dry air lose their water of crystallisation and crumble to powder.
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संबंधित प्रश्न
Write the chemical name and formula of common salt.
What is meant by ‘a family of salts’? Explain with examples.
A salt is dissolved in water and the pH of this salt solution is measured with a universal indicator paper. If the pH of solution is less than 7, the salt is most likely to be ______.
Write the name and formula of one salt which contains:
Five molecules of water of crystallisation.
How many molecules of water of crystallisation (per formula unit) are present in:
Copper sulphate crystals
Name a salt whose solubility decreases with temperature.
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
State what would you observe when :
The salt ferric chloride is exposed to the atmosphere.
