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Consider the following statements 1. ...

Consider the following statements
1. Gypsum is calcium sulphate hemihydrate
2. Retrograde solubility is striking feature of gypsum
3. Alabaster is a variety of gypsum Which of the following statement(s) given above is/ are incorrect?

A

1 & 3

B

only 1

C

2 & 3

D

1, 2 & 3

Text Solution

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The correct Answer is:
B
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SURA PUBLICATION- ALKALI AND ALKALINE EARTH METALS-ADDITIONAL QUESTION ( ADDITIONAL CHOOSE THE CORRECT ANSWER)
  1. Which of the following dissolves in water with a hissing sound?

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  2. The formula of bleaching powder is

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  3. Consider the following statements 1. Gypsum is calcium sulphate hem...

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  4. Dead burnt plaster is

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

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  6. A chemical A is used for the preparation of washing soda. When CO2 is ...

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  7. The suspension of slaked lime in water is known as

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  8. By adding gypsum to cement

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  9. Give the correct order of thermal stabiiity of alkaline earth metal ca...

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  10. M+2H2OtoM(OH)2+H2 which among the following metals does not undergo ...

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  11. Assertion : The fluorides of alkaline earth metals are almost insolubl...

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  12. Which is insoluble in water?

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  13. The correct statements is / are : (i) BeCl2 is a covalent compound ...

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  14. In which of the following reactions, MgO is not formed

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  15. Several blocks of magnesium are fixed to the bottom of a ship to

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  16. Identify the correct statement

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  17. The metals X and Y that form oxide and nitride , when burnt in air are

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  18. Alkali metal are reactive.

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  19. Spodumene is the silicate mineral of

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  20. Which of the following is incorrect ?

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