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प्रश्न
How many molecules of water of crystallisation (per formula unit) are present in:
Gypsum
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उत्तर
Gypsum (calcium sulphate crystals) contains two molecules of water of crystallisation in one formula unit. The chemical formula is CaSO4.2H2O (calcium sulphate dihydrate).
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संबंधित प्रश्न
Plaster of Paris should be stored in a moisture-proof container. Explain why?
What is the commercial name of calcium sulphate hemihydrate?
Name a calcium compound which hardens on wetting with water.
The chemical formula of plaster of Paris is ______.
State a peculiar (or remarkable) property of plaster of Paris.
Name the compound which is used in hospitals for setting fractured bones.
Name the raw material used for the preparation of plaster of Paris.
What is plaster of Paris?
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- Write the chemical equation for its preparation.
- For what purpose is it used in hospitals?
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______ is an important material in the construction industry.
Match the Following:
| 1. | Antiseptic | a. | Plaster of paris |
| 2. | Making casts for statues | b. | Phenol |
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| 4. | Fertilizers | d. | Epsum |
Analogy:
Blackboard chalks: ______:: Plant growth: Epsum.
A compound which is prepared from gypsum has the property of hardening when mixed with water. identify the compound and write its formula. How is this compound prepared? Describe it in the form of a chemical equation only.
