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Plaster of Paris hardens by...

Plaster of Paris hardens by

A

giving off `CO_(2)`

B

utilizing water

C

changing into `CaCO_(3)`

D

giving out water

Text Solution

Verified by Experts

The correct Answer is:
B
`2CaSO_(4).H_(2)O overset("Setting")underset(H_(2)O)rarrCaSO_(4).2H_(2)Ooverset("Harding")rarrCaSO_(4).2H_(2)O`
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Statement I : On mixing with water, Plaster of Paris hardens. Statement II : By combining with water, Plaster of Paris is converted into Gypsum.

Plaster of Paris is

Knowledge Check

  • Plaster of Paris hardens when applied over a bandage. This process is

    A
    reversible
    B
    irreversible
    C
    physical
    D
    natural

  • Plaster of Paris is harden by

    A
    giving off `CO_2`
    B
    changing into `CaCO_3`
    C
    uniting with water
    D
    giving out water

  • 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`

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