Gypsum is:

A

`MgSO_4. 7H_2O`

B

`CaSO_4. H_2O`

C

`CaSO_4. 2H_2O`

D

`CaSO_4. 3H_2O`

Text Solution

Verified by Experts

The correct Answer is:
C
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MBD PUBLICATION-S- BLOCK ELEMENTS [ALKALI AND ALKALINE EARTH METALS]-QUESTION TYPE
  1. One of the important use of quick lime is:

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  2. Disodium hydrogen phosphate in presence of NH4Cl and NH4OH gives a whi...

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  3. Gypsum is:

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  4. Oxygen is obtained from bleaching powder by:

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  5. Which has the maximum electropositive character ?

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  6. Which ion forms a hydroxide highly soluble in water ?

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  7. The compound which is insoluble in hot water and NH3 is:

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  8. Portland cement is:

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  9. Portland cement does not contain:

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  10. A firework gave bright crimson light. It is probably a salt of:

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  11. When magnesium is burnt in air, compounds of magnesium formed are magn...

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  12. Slaked lime is used in the manufacture of:

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  13. The metal that is extracted from sea-water is:

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  14. An aqueous solution of KI does not give a precipitate with :

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  15. Property of the alkaline earth metals that increases with their atomic...

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  16. Plaster of paris is hardened by:

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  17. Alloys of which metal are light and strong and are used in the manufac...

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  18. A piece of magnesium ribbon was heated to redness in an atmosphere of ...

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  19. Flash bulbs contain wire or foil of Mg packed in an atmosphere of:

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  20. Sodium bicarbonate solution on adding to magnesium sulphate solution f...

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