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Dead burnt plaster is ....

Dead burnt plaster is ______.

A

`CaSO_4`

B

`CaSO_4 * (1)/(2) H_2O`

C

`CaSO_4 * H_2O`

D

`CaSO_4 * 2H_2O`

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The correct Answer is:
A
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -NCERT FILE ( NCERT Exemplar Problems ( Multiple Choice Questions -I) )
  1. Alkali metals react with water vigorously to form hydroxides and dihyd...

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  2. The reducing power of a metal depends on various factors. Suggest the ...

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  3. Metal carbonates decompose on heating to give metal oxide and carbon d...

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  4. Which of the carbonates given below is unstable in air and is kept in ...

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  5. Metals form basic hydroxides. Which of the following metal hydroxide i...

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  6. Some of the Group 2 metal halides are covalent and soluble in organic ...

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  7. The order of decreasing ionisation ethalpy in alkali metals is

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  8. The solubility of metal halides depends on their nature, Lattice entha...

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  9. Amphoteric hydroxides react with both alkalies and acids. Which of the...

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  10. In the synthesis of sodium carbonate, the recovery of ammonia is done ...

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  11. When sodium is dissolved in liquid ammonia, a solution of deep blue co...

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  12. By adding gypsum to cement

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  13. Dead burnt plaster is .

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  14. Suspension of slaked lime in water is known as

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  15. Which of the following elements does not form hydride by direct heatin...

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  16. The chemical formula of soda ash is

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  17. A substance which gives a brick red flame and breaks down on heating t...

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  18. Which of the following statements is true about Ca(OH)(2)?

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  19. A chemical A is used for the preparation of washing soda to recover am...

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  20. Dehydration of hydrates of halides of calcium, barium and strontium i....

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