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How is plaster of paris prepared ?...

How is plaster of paris prepared ?

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Plaster of paris is a hemihydrate of calcium sulphate `CaSO_4.1//2H_2O`. It is obtained by heating gypsum at 393K
`2CaSO_4.2H_2O_((s))overset(/_\)tounderset("Plaster of Paris")2CaSO_4.H_2O+3H_2O`
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SURA PUBLICATION- ALKALI AND ALKALINE EARTH METALS-ADDITIONAL LONG ANSWER
  1. How is plaster of paris prepared ?

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  2. List out the uses of alkali metals.

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  3. How are peroxides and superoxides formed by alkali metals?

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  4. Alkali metal hydrides are strong reducing agents. Prove this statement...

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  5. When does the blue coloured ammonia solution (of alkali metals) change...

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  6. Describe about the biological important of sodium and potassium.

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  7. How is sodium hydroxide prepared commercially from brine solution?

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  8. Why do Beryllium and nitrogen have zero electron affinity ?

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  9. Write the equation for the amphoteric nature of Beryllium hydroxide.

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  10. Explain the preparation and uses of the following compounds of calcium...

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  11. Describe solvay process (or) how is washing soda ( or) sodium carbonat...

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  12. Describe about the biological important of sodium and potassium.

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  13. Enlist the simularities between lithium and magnesium.

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  14. Compare the properties of beryllium with other elements of the same gr...

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  15. Give the important uses of the following compounds NaHCO3

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  16. Give the important uses of the following compounds NaOH

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  17. Enlist the simularities between lithium and magnesium.

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  18. Compare the properties of beryllium with other elements of the same gr...

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  19. Distinguish between alkali metals and alkaline earth metals.

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  20. When water is added to compound (A) of calcium, compound B is formed w...

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  21. An element occupies group number 1 and period number 3. This element w...

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