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प्रश्न
Write the names, formulae and colours of any two hydrated salts.
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उत्तर
- Copper sulphate pentahydrate crystals (CuSO4.5H2O) are blue in colour.
- Iron sulphate heptahydrate crystals (FeSO4.7H2O) are green in colour.
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संबंधित प्रश्न
Identify the substance underlined, in the following case
A solid formed by reaction of two gases, one of which is acidic and the other basic in nature
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
The salt prepared by the method of direct combination is _______.
How is common salt obtained from sea-water?
Why is sodium chloride required in our body?
Name the raw material used for the production of caustic soda.
Rock salt is mined just like ______.
What happens when a few drops of water are added to anhydrous copper sulphate? Explain with the help of an equation.
Give the names and formulae of any two salts. Also name the acids and bases from which these salts may be obtained.
A salt whose aqueous solution will have a pH of more than 7 will be ______.
Give one example of a salt which gives an aqueous solution having:
pH less than 7
Give one example of a salt which gives an aqueous solution having:
pH equal to 7
The pH values of three solutions A, B and C are given in the table. Answer the following questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
- Which solution will have no effect on litmus solution?
- Which solution will liberate CO2 when reacted with sodium carbonate?
- Which solution will turn red litmus solution blue?
Name the particles present in :
Strong electrolyte
Give four substances which contain water of crystallization and write their common name.
Name a colourless gas which bleaches.
Identify the following substance:
Gas C has an offensive smell like rotten eggs.
Salt which is formed by the partial replacement of hydrogen ions of an acid by a metal is called ______.
