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Gypsum CaSO(4).2H(2)O on heating to abou...

Gypsum `CaSO_(4).2H_(2)O` on heating to about `120^(@)C` forms a compound which has the chemical composition represented by

A

`2CaSO_4.3H_2O`

B

`CaSO_4.H_2O`

C

`2CaSO_4.H_2O`

D

`CaSO_4`

Text Solution

Verified by Experts

The correct Answer is:
C
Chemical composition of Plaster of Paris is `2CaSO_4.H_2O`.
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Gypsum CaSO_(4).2H_(2)O on heating to about 120^(@) forms a compound which has the chemical composition represented by

Gypsum CaSO_(4).2H_(2)O on heating about 120^(@)C forms a compound which has the chemical composition is

An organic compound A on heating with concentrated H_(2)SO_(4) forms a compound B which on addition of one mole of hydrogen in presence of Ni forms a compounds C. One mole od compound C on combustion form two moles of CO_(2) and three moles of H_(2)O . Identify the compounds A,B and C write the chemical equation of the reactions involved.

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DINESH PUBLICATION-ALKALI EARTH METALS-Revision Questions From Competitive Exams.
  1. Bleaching powder is a compound having a formula

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  2. which one of the following statement is correct for alkaline earth met...

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

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  4. Chemical A is used for water softening to remove temporary hardness. A...

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  5. Which of the following is true for magnesium?

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

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  7. Epson salt's chemical formula is

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  8. Formula of gypsum salt is

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

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

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

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  12. Electronic configuration calcium atom can be written as

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  13. Plaster of paris is hydrate of

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

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

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

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

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  18. An atom with atomic number 20 is most likely to combine chemically wit...

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  19. Except lime, a major constituent of Portland cement is

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  20. Gypsum on heating to 390 K gives

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