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प्रश्न
The chemical formula of plaster of Paris is ______.
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उत्तर
The chemical formula of plaster of Paris is \[\ce{\underline{\mathbf{CaSO_4.\frac{1}{2}H_2O}}}\].
Explanation:
Plaster of Paris is obtained by heating gypsum (CaSO4.2H2O) carefully to a specific temperature of 373 K. At this temperature, the gypsum loses three-fourths of its water of crystallisation to form a white powder. When mixed back with water, it rehydrates and sets quickly into a hard, solid mass of gypsum.
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संबंधित प्रश्न
Plaster of Paris should be stored in a moisture-proof container. Explain why?
Name a calcium compound which hardens on wetting with water.
What will happen if heating is not controlled while preparing plaster of Paris?
What is gypsum?
Name the compound which is used in hospitals for setting fractured bones.
Name the raw material used for the preparation of plaster of Paris.
How is plaster of Paris prepared? Write a chemical equation of the reaction involved.
Plaster of Paris is prepared by heating one of the following to a temperature of 100°C. This is:
How are detergents manufactured?
How many water molecules does hydrated calcium sulphate contain?
______ is an important material in the construction industry.
______ is used in making blackboard chalks.
Calcium sulphate hemihydrate is called as ______.
Match the Following:
| 1. | Antiseptic | a. | Plaster of paris |
| 2. | Making casts for statues | b. | Phenol |
| 3. | Ease stress and relaxes | c. | Gypsum |
| 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.
