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The cation of the metal, which gives gre...

The cation of the metal, which gives gree colour bead in cobalt charcoal cabity test is:

A

`AI`

B

`Mg`

C

`Zn`

D

Both (a) and (c)

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Verified by Experts

The correct Answer is:
C
Zn forms Rinmann's green -`ZnO.CoO`
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GRB PUBLICATION-SALT ANALYSIS-B. Dry Tests/Colour/Solubility/Heating Effects
  1. Each of the following forms a coloured aqueosu solution except:

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  2. The aqueous solution of the following salts will be coloured in the ca...

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  3. The cation of the metal, which gives gree colour bead in cobalt charco...

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  4. Colour of cobalt chloride solution is:

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  5. Which salt is colourless?

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  6. What colour does the strontium ion produce in a flame test?

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  7. A flame test was performed to confirm the identity of a metal ion in s...

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  8. Which solid is most soluble in water at 25^(@)C?

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  9. What is the characteristic colour of the flame test for potassium?

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  10. In Borax bead test the coloured ions give characteristic coloured bead...

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  11. A hydrated salt (x) gives golden yellow colour in flame test, given ba...

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  12. A,B, C and D are respectively:

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  13. If crimson flame is given when an inorganic mixture is tested by flame...

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  14. A brick red colour is imparted to Bunsen flame by a :

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  15. Which one of the following metal salts produced a blue coloured bead i...

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  16. Which one of the following cations will give a green coloured ash when...

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  17. What products are expected from the desproprtionation reactin of hypoc...

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  18. What is the colour of K^(+) through cobalt/double blue glass?

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  19. In the borax test of Co^(2+) , the blue colour of bead is due to the f...

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  20. Which of the following is not a preliminary test used to detect ions?

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