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The colour of copper sulphide is :...

The colour of copper sulphide is :

A

black

B

blue

C

brown

D

red.

Text Solution

Verified by Experts

The correct Answer is:
A
CuS obtained as ppt. with `H_2S` is black .
`Cu^(2+) + H_2S to underset("Black")(CuS) + 2H^(+)`
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MODERN PUBLICATION-APPENDIX A-Multiple Choice Questions (Level-I)
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  2. Lead salts react with K2CrO4 to give precipitates of :

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  3. The colour of copper sulphide is :

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  4. The equivalent weight of iodine in : I2 + 2SO2O3^(2-) to S4 O6^(2-) ...

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  7. Which one among the following pairs of ions cannot be separated by H2...

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  8. Which of the following sulphate is insoluble in water ?

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  9. Flame test is not given by :

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  10. Blue coloured compound is obtained when :

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  11. Which of the following has minimum solubility product ?

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

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  13. Starch reacts with iodine to give :

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  14. Ring test is performed for :

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  15. The group reagent for group III is:

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

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

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

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

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