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A dark green bead in the borax bead test...

A dark green bead in the borax bead test (in oxidising flame) indicates the presence of:

A

`Cr^(3+)`

B

`Mn^(2+)`

C

`Co^(2+)`

D

`Ni^(2+)`

Text Solution

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The correct Answer is:
A
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GRB PUBLICATION-SALT ANALYSIS-B. Dry Tests/Colour/Solubility/Heating Effects
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  2. A dark green bead in the borax bead test (in oxidising flame) indicate...

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  4. Mg(3)N(2)overset(H(2)O)rarr A("gas") overset(CuO)underset(Delta)rarr B...

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  5. A (white substance) overset(Delta)rarr swells up first overset("Strong...

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  6. BeC(2)O(4) and BaC(2)O(4) are heated separately with Bunsen burner. Th...

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  7. Which reaction is possible?

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  8. Na(2)S(2)O(3).5H(2)O is heated strongly to produce M,N and water. Both...

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  9. The compound present in borax bead is:

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  10. Which one of the following ions does not give borax bead test :

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  11. Which of the following compound is formed in borax bead test ?

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  12. A pink coloured salt turns blue on heating. The presence of which cati...

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  13. Which anion forms the smallest number of insoluble salts?

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  14. What is the colour of the flame test for sodium?

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  15. Which salt is significantly more soluble in a strong acid than in wate...

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  16. Solutions of which ion produce a red colour when vaporized in a Bunsen...

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  17. A solid is insoluble in water, does not conduct electricity, and does ...

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  18. Which compound forms a colourless solution when dissolved in H(2)O?

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  19. When phenolphthalein is added to an aqueous solution containing one of...

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  20. Which solute has the greatest solubility (in mol/L) in water at 25^(@)...

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