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An aqueous solution of a substance 'X' g...

An aqueous solution of a substance 'X' gives a white ppt. on treatment with dil. HCI, which dissolves on heating. When hydrogen sulphide is passed through the hot acidic solution, a black ppt. is obtained. 'X' is:

A

`Cu^(2+)` salt

B

`Hg_2^(2+)` salt

C

`Pb^(2+)` salt

D

`Ag^(+)` salt .

Text Solution

Verified by Experts

The correct Answer is:
C
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MODERN PUBLICATION-APPENDIX A-Multiple Choice Questions (Level-I)
  1. Which compound is formed when excess of KCN is added to an aqueous sol...

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  2. The ion that cannot be precipitated by both HCl and H2S is:

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  3. An aqueous solution of a substance 'X' gives a white ppt. on treatment...

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  4. The compound which gives white ppt. with aqueous AgNO3 and a green fla...

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  5. Which of the following statement is not correct when a mixture of NaCl...

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  6. Solution of a chemical compound 'X reacts with AgNO3 solution to form ...

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  7. A mixture when heated with dil. H2SO4 does not evolve brown vapours bu...

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  8. Which of the following dissolves in both KCN and NH3 to form a comple...

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  9. When a bromide is heated with conc. H2SO4 , the gas liberated is :

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  10. Which of the following cation gives white precipitate with H2S in alka...

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  11. Which of the following reagents form a precipitate with a solution con...

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  12. When CS2 layer containing both Br2 and I2 is shaken with excess of Cl2...

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  13. Which of the following pairs of tons would be expected to form precipi...

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  14. In the precipitation of group III in qualitative analysis ammonium chl...

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  15. Which of the following give azo dye test ?

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  16. Which of the following statements is not correct regarding CH3CH2CHO ...

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  17. Which of the following statement about KMnO4 acting as oxidising agent...

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  18. When H2S is passed through the HCl solution containing CuCl2, HgCl2, ...

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  19. Which of the following metal sulphides has maximum solubility in water...

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  20. The gas which turns lime water milky is :

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