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Cu^(2+) " and" Ba^(2+) interfere in the ...

`Cu^(2+) " and" Ba^(2+)` interfere in the flame test for borate, why ?

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Because they also impart green colour to flame.
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RESONANCE-QUALITATIVE ANALYSIS (ANION)-Exercise-1
  1. Why heavy metal chlorides such as Hg(2)Cl(2), AgCl, PbCl(2) etc. do no...

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  2. Why is a freshly prepared solution of FeSO(4) used for the detection o...

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  3. Cu^(2+) " and" Ba^(2+) interfere in the flame test for borate, why ?

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  4. In which of the following reagents, the white precipitate fo PbSO(4) i...

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  5. How will you distinguish between sulphite and sulphate ions ?

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  6. When a metal sulphate is heated in dry test tube, the colour changes f...

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  7. Which of the following can not evolve more than one gas (vapour) if he...

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  8. On heating, a white amorphous inorganic compound becomes yellow and on...

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  9. Which of the following metal carbonates liberate. CO(2)(g) on heating ...

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  10. In which of the following reactions a brown coloured gas is evolved ?

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  11. Why is concentrated HCl used to dissovle the given metal salt in the f...

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  12. The hottest part of the flame of a Bunsen burner is the

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  13. Metal (M) shows crimson red colour in flame test and its halide is del...

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  14. In Borax bead test, metal oxides react with B(2)O(3) and form a colour...

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  15. Which does not give borax bead test?

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  16. In the Borax bead test of Co^(2+), the blue colour of bead is due to t...

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  17. A salt gives white residue in charcoal cavity test but in cobalt nitra...

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  18. Which of the following anions are identified by dil. HCl :

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  19. Two inorganic compounds A and B were heated in a dry test tube. A evol...

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  20. If addition of conc. H(2)SO(4) is made to an unknown salt, a colourles...

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