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Even in the absence of group II,colloida...

Even in the absence of group II,colloidal yellowish ppt appears on passing `H_(2)S` gas , it be due to the presence of (a) _____.

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The correct Answer is:
Oxidising agent (like `SO_(3)^(2-),NO_(3)^(Theta))`
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CENGAGE CHEMISTRY-QUALITATIVE INORGANIC SALT ANALYSIS-Exercises (Fill In The Blanks)
  1. NO(3)^(Θ) is detected by (a) when (b)is formed on the addition of FeS...

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  2. CI^(Θ)is condirned by (a) .

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  3. Addition of one drop of HNO(3) in group (III)qanalysis is to (a) .

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  4. Reagent that can detect any of Fe^(3+),Co^(2+) and Cu^(2+) is (a) .

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  5. While testing borate, green edged flame is due so formation of (a) .

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  6. When SO(2) is passed into suspention of CaSO(3) in water (a) is form...

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  7. Alkaline Noverset(o+)(H)(4) salt give brown ppt with K(2)HgI(4) brown ...

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  8. Even in the absence of group II,colloidal yellowish ppt appears on pa...

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  9. Hypo gives (a) ppt. with AgNO(3) which changes to (b) .

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  10. Reddish brown colouration when neutral FeCl(3) is added to the CH(3)C...

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  11. As(2)S(3) is solution in(NH(4))(2)S(2) (yellow ammonium sulphide) due...

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  12. On heating the salt with NHO(3) and ammonium molybdate , formation o...

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  13. Cu^(2+) gives white ppt. of (a) with (b) and deep blue colour of (c )...

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  14. AgCl is soluble in (a) and Ag^(o+) is present in (b).

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  15. Hg(2)Cl(2) aprecipitate if (a) is greater than K(sp) (Hg(2)Cl(2)).

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  16. Sodium carbonate and mixture are taken in (a) ratio white perparing s...

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  17. BaBr(2) in aq solution give yellow ppt ,with (a) as well as with (b).

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  18. Yellow ppt of (a) is formed when CoCI(2) reacts with excess of KNO(...

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  19. Microcosmic salt bent test in which Na(NH(4))H. PO(4). 4H(2)O is first...

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  20. Th esodium carbobate bead test test is which Na(2)CO(3) is along in...

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