Home
Class 12
CHEMISTRY
Dead burnt plaster is...

Dead burnt plaster is

A

`CaSO_(4), 2H_(2)O`

B

`MgSO_(4).7H_(2)O`

C

`CaSO_(4).1//2H_(2)O`

D

`CaSO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
When heated to about `200^(@)C` plaster of paris of gypsum is converted into anhydrous calcium sulphate which is known as dead burnt plaster becuae it does not set like plaster of paris when moistened with water.
`underset("Plaster of paris")(CaSO_(8)). 1/2 H_(2)O overset(28^(@)C)(to)underset("Dead burnt plaster")(CaSO_(2))+1/2H_(2)O`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THE S-BLOCK ELEMENTS

    PHYSICS WALLAH|Exercise LEVEL 2|60 Videos

  • THE S-BLOCK ELEMENTS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS|24 Videos

  • THE P-BLOCK ELEMENTS

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|28 Videos

  • THE SOLID STATE

    PHYSICS WALLAH|Exercise NEET PAST 10 YEARS QUETSIONS|8 Videos

Similar Questions

Explore conceptually related problems

What is dead burnt plaster ?

What is dead burnt plaster ?

Knowledge Check

  • Dead burn plaster is

    A
    `Ca SO _(4) . 2H_(2)O`
    B
    `Mg SO _(4). 7 H _(2) O`
    C
    `C a SO _(4) . 1//2 H _(2) O`
    D
    `Ca SO _(4)`

  • Dead burnt is

    A
    anhydrous `Na_(2) SO_(4)`
    B
    `Na_(2)CO_(3)` which is useful for softening
    C
    `CaSO_(4)` which is not useful for setting
    D
    anhydrous `CuSO_(4)`

  • Above which temperature, hydrous calcium sulphate is converted into dead burnt plaster :-

    A
    313 K
    B
    373 K
    C
    413K
    D
    393 K

    • Similar Questions

    Explore conceptually related problems

    What is dead burnt plaster ? Why is it so called ?

    What is dead burnt plaster ? How is it obtained ?

    Give the chemical composition of the following : (a) Anhydrane (b) Fluid magnesia (c ) Dead burnt plaster (d) Sorel Cement (e ) Epsom salt (f) Magnesia mixture

    What is dead burnt plaster?

    Number of water molecules present in gypsum,dead burnt plaster and plaster of paris respectively are

    Home
    Profile