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Boron form many compound like boric acid...

Boron form many compound like boric acid, borax inorganc graphite etc. Orthoboric acid contain triangular `BO_(3)^(2-)` units. In the solid the `B(OH)_(3)`units are hydrogen bonded together into `2-D` sheets with almost hexagonal summetry. Borax is used in borax bead best.
Borax bead test can be used to detect

A

Vitamin A

B

Vitamin C

C

Vitamin `B_(12)`

D

None of these

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The correct Answer is:
C
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Boron form many compound like boric acid, borax inorganc graphite etc. Orthoboric acid contain triangular BO_(3)^(2-) units. In the solid the B(OH)_(3) units are hydrogen bonded together into 2-D sheets with almost hexagonal summetry. Borax is used in borax bead best. Boric acid can behave as a strong acid in presence of

Boron form many compound like boric acid, borax inorganc graphite etc. Orthoboric acid contain triangular BO_(3)^(2-) units. In the solid the B(OH)_(3) units are hydrogen bonded together into 2-D sheets with almost hexagonal summetry. Borax is used in borax bead best. The number of the H-atoms replaced from boric acid when it is dissolved in water is

How many B-O-B bond (s) (per molecule) is/are present in compound which is used in Borax bead test ?

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 is actually made of two tetrahedral and tetrahedral and two triangular units joined together and should be written as Na_(2)[B_(4)O_(5)(OH)_(4)].8H_(2)O Aqueous solution containing 1 mol of borax reacts with 2 mol of acids. This is because 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:

Borax is actually made of two tetrahedra and two triangular units joined together and should be written as Na_(2)[B_(4)O_(5)(OH)_(4)].8H_(2)O . Consider the following statements about borax : A : Each boron atom has four B-O bonds. B : Each boron atom has three B-O bonds. C : Two boron atoms have four B-O bonds while other two have three B-O bonds. D : Each boron atom has one-OH group. Select correct statement (s) :

NARAYNA-13TH GROUP ELEMENTS-Level-II (H.W)
  1. Which one of following is not an electron deficient compound

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  2. Which of the following oxides dissolves in both hydrochloric acid and ...

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  3. When borax is dissolved in water:

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  4. All the products formed in the oxidation of NaBH(4) by I(2) are

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  5. Which is used to separate Al(2)O(3) and Fe(2)O(3)

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  6. Aluminium is more reactive than iron. But aluminium is less easily cor...

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  7. A white precipitate (X) is formed when a mineral of Boron (W) is bolie...

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  8. Boron form many compound like boric acid, borax inorganc graphite etc....

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  9. Boron form many compound like boric acid, borax inorganc graphite etc....

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  10. Boron form many compound like boric acid, borax inorganc graphite etc....

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  11. Colemanite + G (compound) rarr A + B + C Coverset(Delta)rarrD+E("gas...

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  12. Colemanite + G (compound) rarr A + B + C Coverset(Delta)rarrD+E("gas...

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  13. Colemanite + G (compound) rarr A + B + C Coverset(Delta)rarrD+E("gas...

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  14. Group 13 element reacts with halogen and forms a compound P shows the ...

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  15. Group 13 element reacts with halogen and forms a compound P shows the ...

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  16. Orthoboric acid, B(OH)(3), is the normal end product of hydrolysis of ...

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  17. Orthoboric acid, B(OH)(3), is the normal end product of hydrolysis of ...

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  18. Orthoboric acid, B(OH)(3), is the normal end product of hydrolysis of ...

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  19. The compound Y is

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  20. The compound X is

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