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Plaster of Paris is chemically...

Plaster of Paris is chemically

A

(CaSO_2)_2 . H_2 O'

B

CaSO. 2 H O'

C

CaSO_4 .1/2 H_2 O'

D

CaSO_4. 5 H_2 O^'

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The correct Answer is:
A
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V PUBLICATION-THE s- BLOCK ELEMENTS-QUESTION BANK
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  2. Which has the maximum lattice energy?

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  4. Which is maximuim reactive towards water?

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  5. Which has the maximum electropositive character? Cu Cs Ba Cr

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  6. The electronic configuration of a metal 'M' is '1 s^2 s^2 2 p^6 3 s^1'...

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  7. The basic character of the oxides, Mg O, SrO, K2O, NiO' and 'CS2 O inc...

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  8. Which of the following'are arranged in increasing order of solubilitie...

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  9. The compound insoluble in acetic acid is ?

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  10. Which of the following is not an ore of lithium? Petalite, Triphylite...

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  11. Down's process is used for the extraction of Na Li Ba Mg

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  12. Which of the following is not an important constituent of cement? C a ...

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  13. All the folowing substances react with water. The pair which'gives the...

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  14. Solvay process is used for the manufacture of NaOH' 'Na2 CO3' NH3' ...

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  15. Magnesium is present in

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  16. Plaster of Paris is chemically

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  17. Quicklime is :

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  18. Slaked lime reacts with chlorine to give CaCl2' CaO' CaOCl2' CaCO3'

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  19. Sùspension of slaked lime 'in' water is called Washing of lime Quickl...

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  20. Which of the following is not present in portland cement? SiO Al2 ...

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