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प्रश्न
Out of PbS and PbCO3 (ores of lead), which one is concentrated by froth floatation process preferably?
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उत्तर
PbS
संबंधित प्रश्न
What criterion is followed for the selection of the stationary phase in chromatography?
Outline the principles of refining of metals by the following method:
Vapour phase refining
Zone refining is based on the principle that ______.
In the extraction of chlorine from brine:
(i) ∆GΘ for the overall reaction is negative.
(ii) ∆GΘ for the overall reaction is positive.
(iii) EΘ for overall reaction has negative value.
(iv) EΘ for overall reaction has positive value.
Why is an external emf of more than 2.2 V required for the extraction of \[\ce{Cl2}\] from brine?
Which method is used for refining Zr and Ti? Explain with equation.
Assertion: Zone refining method is very useful for producing semiconductors.
Reason: Semiconductors are of high purity.
Refining using liquation method is the most suitable for metals with ______.
Describe a method for refining nickel.
Describe a method for refining nickel.
