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प्रश्न
Select the correct answer from the choice given in the options.
An anhydrate of a heptahydrate salt _____.
विकल्प
Cu(N03)2
Ca(NO3)2
FeSO4
CaSO4
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उत्तर
An anhydrate of a heptahydrate salt FeSO4
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संबंधित प्रश्न
What do you observe when Blue vitriol is heated?
Give one word for the following statement:
A substance which does not contain water .
Give one word for the following statement:
Water molecules in loose chemical combination with other substances.
Give the names and formulae of two substances.
Hydrated substance
Give the names and formulae of two substances
Anhydrous substance
What are drying or desiccating agents? Give examples.
Complete the following table:
|
Common Name |
Chemical Name |
Formula |
Acid, base or salt |
Efflorescent, hygroscopic or deliquescent substance |
|
Solid caustic potash |
|
|
|
|
|
Quick lime |
|
|
|
|
|
Oil of vitriol |
|
|
|
|
|
Washing soda |
|
|
|
|
|
Solid caustic soda |
|
|
|
|
|
Blue vitriol |
|
|
|
|
Name three methods by which hydrous substances can be made anhydrous.
Differentiate between hydrated and anhydrous crystals with examples. State three defined changes that occur when hydrated copper sulphate is heated.
A hot saturated solution of copper sulphate forms crystals as it cools. Why?
