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Borax on heating strongly above its melt...

Borax on heating strongly above its melting point melts to a liquid which then solidifies to a transparent mass commonly known as borax bead. The transparent glassy mass consists of 

A

Mixture of sodium metaborate and boric anhydride

B

Boric anhydride

C

Sodium metaborate

D

Sodium pyrobarate

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The correct Answer is:
A
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AAKASH SERIES-ELEMENTS OF BORON FAMILY-OBJECTIVE EXERCISE - 1
  1. Basicity of H(3)BO(3) is

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  2. Diborane undergo clevage reactions with .... to give borane adducts.

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  3. Borax on heating strongly above its melting point melts to a liquid wh...

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  4. Identify the statement that is not correct as far as structure of dibo...

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  5. On the addition of mineral acid to an aqueous solution of borax, the c...

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  6. Diborane reacts with water to form

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  7. Diborane does not undergo cleavage reaction with

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  8. Which metal forms a protective oxide layer to prevent corrosion ?

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  9. In metallurgy, the substance which can act as de-oxidizer is

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  10. Dihydrate of alumina is present in

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  11. Regarding 'All the wrong statement is

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  12. Which of the following has no reaction with HCI ?

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  13. In the alumino-thermic process, aluminium acts as

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  14. Alum is not used

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  15. Which of the following processes does not involve a catalyst

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  16. The hybridisation of 'Al' in [Al(H(2)O)(6)]^(3+) is

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  17. (A) : White fumes appear around the bottle of anhydrous aluminium chlo...

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  18. In Al(2)Cl(6), the covalency of aluminium is

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  19. a) AlCl(3) fumes in moist air due to its hydro lysis b) Al metal is ...

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  20. Which of the following statement about aluminium chloride is not corre...

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