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प्रश्न
Name the product obtained when Plaster of Paris is mixed with water. State the use of the product. Give two uses of POP.
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उत्तर
The chemical formula of Plaster of Paris (POP) is CaSO4.½H2O. Gypsum (CaSO4.2H2O) is formed on mixing POP with water as follows:
CaSO4.½H2O + 1½ H2O → CaSO4.2H2O
Uses of POP:-
- In hospitals, as plaster for supporting fractured bones in the right position.
- For making decorative materials and for making wall surfaces smooth.
- As a fire-proofing material.
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संबंधित प्रश्न
Write an equation to show the reaction between Plaster of Paris and water.
Plaster of Paris has a remarkable property of setting into a hard mass on addition of water.
Which property of plaster of Paris is utilised in making casts for broken limbs in hospitals?
What is plaster of Paris? Write the chemical formula of plaster of Paris.
How is plaster of Parish prepared? Write chemical equation of the reaction involved.
State two important use of plaster of Paris.
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 compound X which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water.
For what purpose is it used in hospitals?
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 many molecules of water of crystallisation (per formula unit) are present in:
gypsum?
The chemical formula for plaster of Paris is:
At what temperature is gypsum heated to form Plaster of Paris?
How many water molecules does hydrated calcium sulphate contain?
______ is an important material in the construction industry.
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:
______: Calcium Sulphate Dihydrate:: Plaster of Paris: Calcium Sulphate Hemihvdrate.
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.
