General Principles and Processes of Isolation of Elements
An ore sample of galena (PbS) is contaminated with zinc blende (ZnS). Name one chemical which can be used to concentrate galena selectively by froth floatation method.
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Which will not give metal on heating ?
H2 is not widely used as the reducing agent in metallurgic process because :
Describe the extraction of Mercury metal from its ore Cinnabar (HgS).
Two ores A and B were taken. On heating ore A gives CO2 whereas, ore B gives SO2.What steps will you take to convert them into metals?
Identify the oxide ore among the following :
The above process is:
Assertion :Extraction of metals from their ores by chemical methods requires the use of reducing agent. Reason :Reducing agent helps to convert the metal oxide from its ore to the metal.
The main source of lead is PbS. It is converted to Pb by the reactions are shown above. Out of these, the self-reduction process is: