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प्रश्न
How is plaster of Parish prepared? Write chemical equation of the reaction involved.
उत्तर
When gypsum (CaSO4.2H2O) is heated to a temperature of 100⁰C (373K), it loses three-fourths of its water of crystallisation and forms plaster of Paris.
CaSO4.2H2O Δ → CaSO4.1/2H2O + 3/2 H2O
Gypsum Plaster of Paris
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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.
Which property of plaster of Paris is utilised in making casts for broken limbs in hospitals?
Consider the following substances:
NaCl, Ca(OH)2, NaHCO3, NH3, Na2CO3, H2O, Cl2, CO2, CaSO4.2H2O, 2CaSO4.H2O, CaOCl2
Which compound represents plaster of Paris?
A white chemical compound becomes hard on mixing with proper quantity of water. It is also used in surgery to maintain joints in a fixed position. Name the chemical compound.
How are detergents manufactured?
How many water molecules does hydrated calcium sulphate contain?
______ is used in making blackboard chalks.
Analogy:
______: Calcium Sulphate Dihydrate:: Plaster of Paris: Calcium Sulphate Hemihvdrate.
