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The following sequence of reactions is u...

The following sequence of reactions is used to convert borax into boron (B).
`Na_(2)underset("Borax")([B_(4)O_(5)(OH)_(4)]).8H_(2)O overset(x)toH_(3)BO_(3)overset(Delta)toB_(2)O_(3) overset(Y)to underset("Boron")(B)`
Reagents X and Y are respectively

A

Acid, Al

B

Base, C

C

Base, Fe

D

Acid, Mg

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-THE P-BLOCK ELEMENTS-Assignment Section-B)
  1. Which is correct for the structure of diborane ?

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  2. The following sequence of reactions is used to convert borax into boro...

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  3. Which of the following reaction represents the correct product formati...

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  4. Stability of trivalent and mono valent cation of group 13 (Boron famil...

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  5. Ionisation of boric acid in aqusous medium gives which one of the fol...

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  6. Shortest C-O bond is present in

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  7. Boron halides behave as Lewis acid because of their nature.

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  8. In graphite, electrons are

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  9. From B(2)H(6), all the following can be prepared except

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  10. Thermodynamically the most stable form of carbon is

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  11. Specify the coordination geometry around and the hybridisation of N an...

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  12. Carbondioxide is used for extinguishing fire because

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  13. Boron nitride on reacting with steam gives

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  14. Borax is written as

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  15. Write the chemical reactions of P(4)O(6) with cold and hot water.

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  16. Which of following trihalides of nitrogen behaves as the weakest base?

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  17. Arrange the following molecules in the increasing order of bond angle....

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  18. The colour of I(2) is violet because it

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  19. (NH(4))(2)Cr(2)O(7) on heating gives a gas which is also given by :

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  20. K(2)Cr(2)O(7)+SO(2) overset(H+)toproducts the oxidation state of chr...

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