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प्रश्न
Give one word or a phrase:
The property by which certain hydrated salts, when left exposed to atmosphere, lose their water of crystallization and crumble into powder.
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उत्तर
Efflorescence
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संबंधित प्रश्न
From the list of the following salts choose the salt that most appropriately fits the
description is given in the following:
[AgCl, MgCl2, NaHSO4, PbCO3, ZnCO3, KNO3, Ca(NO3)2]
On heating, this salt gives a yellow residue when hot and white when cold
Why is sodium chloride required in our body?
The aqueous solution of one of the following salts will turn phenolphthalein indicator pink. This salt is:
A salt whose aqueous solution will have a pH of more than 7 will be ______.
Which of the following salts will give an aqueous solution having pH of almost 7?
name two salts which are basic.
Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.
Answer the questions below relating your answers only to salts in the following list: Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water?
- What name is given to the water in the compound copper sulphate-5-water?
- If copper sulphate-5-water is heated, anhydrous coppersulphate is formed. What is its colour?
- By what means, other than healing, could you dehydrate copper sulphate-5-water and obtain anhydrous coppersulphate?
- Which one of the salts in the given list is deliquescent?
Copy and complete the following table which refers to the action of heat on some carbonates:
| Carbonate | Colour of residue on cooling |
| Zinc Carbonate | |
| Lead carbonate | |
| Copper carbonate |
Select the correct answer from A, B, C, D and E.
A compound which in the aqueous solution state, is neutral in nature.
