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The glasss- like bead , obtainated on st...

The glasss- like bead , obtainated on strong heating of borox is a mixture of

A

`NaBO_(2)+B_(2)O_(3)`

B

`Na_(2)B_(4)O_(7)+B_(2)O_(3)`

C

`H_(2)B_(4)O_(7)+B_(2)O_(3)`

D

`Na_(2)B_(4)O_(7)10H_(2)O+B_(2)O_(3)`

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Borax Bead Test is carried out when the original mixture is coloured. It is done with the help of a cleam platinum wire on which a small loop is made at the end. When borax is heated on platinum wire loop transparent glass like bead is obtained. The hot bead is brought in contact with salt till it reacts with fused borax and colour is imparted to the bead. bead colour is noted. {:("Colour of the bead","Ion"),(1." Blue green",Cu^(2+)),(2." Yellow ",Fe^(3+)),(3." Green",Cr^(3+)),(4." Violet",Mn^(2+)),(5." Dark blue",Co^(2+)),(6." Brown",Ni^(2+)):} Q. The flame used in Borax Bead Test is:

Borax Bead Test is carried out when the original mixture is coloured. It is done with the help of a cleam platinum wire on which a small loop is made at the end. When borax is heated on platinum wire loop transparent glass like bead is obtained. The hot bead is brought in contact with salt till it reacts with fused borax and colour is imparted to the bead. bead colour is noted. {:("Colour of the bead","Ion"),(1." Blue green",Cu^(2+)),(2." Yellow ",Fe^(3+)),(3." Green",Cr^(3+)),(4." Violet",Mn^(2+)),(5." Dark blue",Co^(2+)),(6." Brown",Ni^(2+)):} Q. Glassy bead of :

Borax Bead Test is carried out when the original mixture is coloured. It is done with the help of a cleam platinum wire on which a small loop is made at the end. When borax is heated on platinum wire loop transparent glass like bead is obtained. The hot bead is brought in contact with salt till it reacts with fused borax and colour is imparted to the bead. bead colour is noted. {:("Colour of the bead","Ion"),(1." Blue green",Cu^(2+)),(2." Yellow ",Fe^(3+)),(3." Green",Cr^(3+)),(4." Violet",Mn^(2+)),(5." Dark blue",Co^(2+)),(6." Brown",Ni^(2+)):} Q. Blue bead can be of:

The sum of ppi-dpi bonds in the gases obtained by strong heating of ferrous sulphate is :

NARAYNA-13TH GROUP ELEMENTS-Comphensive Type Question
  1. The glasss- like bead , obtainated on strong heating of borox is a mix...

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  2. Ca(2)B(6)O(11) + NA(2)CO(3) overset("Fusted")rarr(A) + (B) + CaCO(3) ...

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  3. Observe the following reaction sequence carefully and answer the quest...

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  4. Observe the following reaction sequence carefully and answer the quest...

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  5. Observe the following reaction sequence carefully and answer the quest...

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  6. Borax is actually made of two tetrahedral and tetrahedral and two tria...

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  7. Borax is actually made of two tetrahedral and tetrahedral and two tria...

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  8. Borax is actually made of two tetrahedral and tetrahedral and two tria...

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  9. Borax is formulated as Na(2)[B(4)O(5)(OH)(4)].8H(2)O. On the basis i...

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  10. Borax is formulated as Na(2)[B(4)O(5)(OH)(4)].8H(2)O. On the basis i...

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  11. Borax is formulated as Na(2)[B(4)O(5)(OH)(4)].8H(2)O. On the basis i...

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  12. Diborane (B(2)H(6)) on heating with NH(3) at 450 K produce a compound ...

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  13. Diborane (B(2)H(6)) on heating with NH(3) at 450 K produce a compound ...

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  14. Diborane (B(2)H(6)) on heating with NH(3) at 450 K produce a compound ...

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  15. A white precipitate (X) is formed when a mineral (A) is boiled with Na...

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  16. A white precipitate (X) is formed when a mineral (A) is boiled with Na...

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  17. A white precipitate (X) is formed when a mineral (A) is boiled with Na...

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  18. Alums having the general formula M(2)SO(4).M(2)^(1)(SO(4))(3).24H(2)O ...

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  19. Alums having the general formula M(2)SO(4).M(2)^(1)(SO(4))(3).24H(2)O ...

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  20. Alums having the general formula M(2)SO(4).M(2)^(1)(SO(4))(3).24H(2)O ...

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  21. (All products from P to related to Boron. The by products are not in...

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