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A(1) and A(2) are two ores of metal M.A(...

`A_(1)` and `A_(2)` are two ores of metal `M.A_(1)` on calcination gives a black precipitate, `CO_(2)` and water. Identify `A_(1)` and `A_(2)`.
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The correct Answer is:
`A_(1)`: Malachite `A_(2):` Copper glance
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ALLEN-METALLURGY-EXERCISE-05 [B]
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  2. Which of the following process is used in the extractive metallurgy of...

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  3. In the process of extraction of gold, Roasted gold ore +CN^(-)+H2Oov...

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  4. The method chiefly used for the extraction of lead and tin from there ...

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  5. Which ore contains both iron and copper?

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  6. A(1) and A(2) are two ores of metal M.A(1) on calcination gives a blac...

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  7. Match the column :

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  8. Extraction of iron from zine blende is achieved by

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  9. Match the column:

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  10. Native silver metel froms a water solube, complesx with a dilute aqueo...

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  11. Copper is the most noble of first row transition metals and occurs in ...

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  12. Copper is the most noble of first row transition metals and occurs in ...

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  13. Copper is the most noble of first row transition metals and occurs in ...

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  14. Extraction of metal from the ore cassiterite involves

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  15. Oxidation states of the metal in the minerals haematite and magnetite,...

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  16. Ibn the cyanide extraction process of silver form aragetite are ,oxidi...

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  17. Sulfide ores are common for the metals.

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  18. The carbon-based reduction method is NOT used for the extraction of

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  19. Upon hetaing with Cu(2)S the regants that give copper metel are (i)...

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  20. Extraction of copper from copper pyrite (CuFeS(2)) involves

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