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Which out of the following statements is...

Which out of the following statements is not correct for anyhydrous calcium chloride ?

A

It is prepared by heating hydrated calcium chloride above `533 K`

B

It is used for drying alcohols and `NH_(3)`

C

It is used as a dehydrating agent to control snow and ice on highway and pavements

D

When mixed in concrete, it gives quicker initial setting and improves its strength.

Text Solution

Verified by Experts

The correct Answer is:
B
Anhydrous `CaCl_(2)` is not used as dry alcohol as it forms `CaCl_(2).4C_(2)H_(5)OH` and also reacts with `NH_(3)`.
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A2Z-S BLOCK ELEMENTS ( GROUP 13 - 14)-General Characterstics, Pysical And Chemical Properties Of Alkaline Earth Metals
  1. The most electropositive amongst the alkaline earth metals is:

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

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  3. Which out of the following statements is not correct for anyhydrous ca...

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  4. Alkaline earth metal salts are:

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  5. One mole of magnesium nitride on reaction with an excess of water give...

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  6. The correct order regarding the solubility of alkaline earth metal chl...

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  7. The first ionisation energies of alkaline earth metal are higher than ...

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  8. Amongst the following hydroxides, the one which has the lowest value o...

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  9. Serveral blocks of magnesium are fixed to the bottom of a ship to

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  10. Beryllium shows diagonal relationship with aluminum . Which of the fol...

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  11. A metal M readily forms its sulphate MSO(4) which is watersoluble. It ...

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  12. The first ionisation potentials (eV) of Be and B respectively are

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  13. The set representing the correct order of the first ionisation potenti...

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  14. Calcium is obtained by the

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  15. Which of the following is incorrect ?

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  16. Compounds of alkaline earth metals are less soluble in water than the ...

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  17. Which of the following sulphates is useful in diagnosing stomach or du...

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  18. Lithopone is a mixture of

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  19. The decreasing order of the second ionization potentials of K, Ca and ...

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  20. Li shows the diagonal relationship with

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