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Subject: Chemistry, asked on 24/10/10

plz explain the ellingham diagram more clearly with examples as it is not clear

Subject: Chemistry, asked on 17/1/12

 what is the role of Depressant in froth floatation method.

Subject: Chemistry, asked on 26/7/13

principle of froth floatation ?

Subject: Chemistry, asked on 22/10/13

n-factor of k2cr2o7 in acidic med?

Subject: Chemistry, asked on 23/5/15

what is the role of collectors in froth floatation?

Subject: Chemistry, asked on 29/4/14

The mass of carbon anode consumed (giving only carbondioxide) in the production of 270 kg of aluminium metal from bauxite by the Hall process is : (Atomic mass Al = 27)A)180 kgB)270 kgC)540 kgD)90 kg

Also explain.

Subject: Chemistry, asked on 21/1/12

 What is flux ? What is itz role in metallurgy of Iron n Copper ?

Subject: Chemistry, asked on 18/1/12

What is Hardy-Schulze rule???

Subject: Chemistry, asked on 25/8/13

explain the principle of zone refining

Subject: Chemistry, asked on 10/3/14

Why Zinc oxide can be reduced to the metal by heating with carbon but not Cr2O3

Subject: Chemistry, asked on 10/3/12

Why is froth floatation process used to extract SULPHIDES????? y sulphides!??!!

Subject: Chemistry, asked on 12/3/14

what is the principle of electrolytic refining?

Subject: Chemistry, asked on 10/3/14

Explain the role of NaCN in the extraction of silver.is it necessary to write reaction or fine to write answer asNaCN forms a complex with Ag which again on reaction with Zn gives pure Ag. So, What should I expect with the examiner

Subject: Chemistry, asked on 29/12/12

why do noble gases have comparatively large atomic sizes?

Subject: Chemistry, asked on 7/8/13

limitation of crystal field theory

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