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Plaster of Paris hardens by...

Plaster of Paris hardens by

A

Giving off `CO_2`

B

changing into `CaCO_3`

C

combining with water

D

Giving out water

Text Solution

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The correct Answer is:
C
Plaster of Paris is hardened by combining with water.
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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.

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DINESH PUBLICATION-ALKALI EARTH METALS-Revision Questions From Competitive Exams.
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  2. Which of the following is different from other three oxides?

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  3. Plaster of Paris hardens by

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  4. Bleaching powder is a compound having a formula

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  6. Gypsum CaSO(4).2H(2)O on heating to about 120^(@)C forms a compound wh...

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  8. Which of the following is true for magnesium?

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  9. Epson salt is the hydrate of one of the following:

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  10. Epson salt's chemical formula is

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  11. Formula of gypsum salt is

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  12. Which of the following compound of cement sets at the slowest rate?

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  13. A sudden large jump between the values of second and third ionisation ...

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  14. Which is the correct order of increasing basic strength?

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  15. Electronic configuration calcium atom can be written as

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  16. Plaster of paris is hydrate of

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  17. Which of the following on heating at 125^(@)C gives Plaster of Paris?

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  18. Which is used in the laboratory for last drying of neutral gases?

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  19. The atomic numbers of four elements are given below. Which one is an a...

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  20. The mixture of MgCl(2) and MgO is called .

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