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Which of the following gas gives brown p...

Which of the following gas gives brown ppt. with Nessler's reagent ?

A

`NO_2`

B

`SO_2`

C

`CO_2`

D

`NH_3` .

Text Solution

Verified by Experts

The correct Answer is:
D
`NH_3` gives brown ppt with Nessler.s reagent
`2K_2HgI_4 + NH_3 + 3KOH to underset("Brown ppt.")(H_2NHgO.HgI) + 7KI + 2H_2O`
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MODERN PUBLICATION-APPENDIX A-Multiple Choice Questions (Level-I)
  1. Blue coloured compound is obtained when :

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  2. Which of the following has minimum solubility product ?

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  3. Which of the following gas gives brown ppt. with Nessler's reagent ?

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  4. Starch reacts with iodine to give :

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  5. Ring test is performed for :

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  6. The group reagent for group III is:

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  7. As2S3 is soluble in yellow ammonium sulphide due to the formation o...

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  8. Fe^(3+) ions react with potassium thiocyanide to give :

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  9. Acidic solution of a salt produced deep blue colour with starch and p...

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  10. On heating a metal chloride with K2Cr2O7 and conc. H2SO4, the gas evol...

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  11. The aqueous solution of a salt gives white ppt. with lead acetate solu...

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  12. Pb^(2+) belongs to :

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  13. Disodium hydrogen phosphate is used to test :

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  14. Which of the following pair is precipitated with (NH4)2CO3 in the pres...

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  15. Solution of ZnS in dil HCl , when treated with NaOH solution , a white...

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  16. Which of the following sulphide is not soluble in dil. HNO3 ?

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  17. A colourless salts gives grassy green colour in bunsen flame, it may b...

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  18. KCN is used for the separation of :

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  19. Ammonia gas when passed through Nessler's reagent , forms a brown prec...

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  20. Chlorides react with conc. H2SO4 and evolve :

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