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Give important uses of Plaster of Paris....

Give important uses of Plaster of Paris.

Text Solution

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1. Plaster of Paris is used for producing moulds for toys, pottery, ceramics, etc.
2. It is used for making statues, models and other decorative materials.
3. It is used in medical applications known as plasters for setting broken and fractured bones in the right position and in dentistry.
4. It is used for making smooth surfaces and ornate designs on walls and ceilings.
5. It is used as a fire proofing material.
6. It is used in laboratories for sealing the air gaps in apparatus to make it air tight.
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Give one important use of plaster of paris.

(a). What is plaster of paris? Write the chemical formula of plaster of paris. (b) How is plaster of paris prepared? Write chemical equation of the reaction involved. (c) Explain why plaster of paris should be stored in a moisture-proof container. (d) State two important uses of plaster of paris.

Knowledge Check

  • Plaster of Paris is

    A
    `Ca SO _(4) . 2 H _(2) O`
    B
    `Ca SO _(4) . (1)/(2) H _(2)O`
    C
    `CaSO _(4) . 5 H _(2) O`
    D
    `CaSO _(4) . H _(2) O`

  • Plaster of Paris is

    A
    calcium sulphate `(CaSO_(4))`
    B
    calcium sulphate hemihydrate`(CaSO_(4).1//2H_(2)O)`
    C
    barium sulphate `(BaSO_(4))`
    D
    none of these .

  • Plaster of paris is

    A
    `CaSO_(4).(1)/(2)H_(2)O`
    B
    `CaSO_(4).2H_(2)O`
    C
    `CaSO_(4).CaCO_(3)`
    D
    `CaSO_(4).5H_(2)O`

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    Write a chemical equation to show the reaction of plaster of Paris with water. Give any two uses of plaster of Paris.

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    Plaster of paris is :

    Presence of which of the following salt increases the rate of setting of Plaster of Paris.

    The formula of Plaster of Paris is

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