Metallurgy (Jee) Exam 2025/2026 With
100% Correct Answers
Hydraulic washing or Gravity separation CORRECT
ANSWERS based on the difference in the densities of the
gangue and or particles
Electromagnetic separation CORRECT ANSWERS Separation
based on differences in magnetic properties
Chromite ore (FeO.Cr2O3 ) is separated from non-magnetic
sillicious impurities and cassiterite ore (SnO2 ) is separated from
magnetic Wolframite (FeWO4 + MnWO4 ).
Froth floatation process CORRECT ANSWERS process used
for the concentration of the low grade sulphide ores like galena,
copper iron pyrites , ZnS
Principle of Adsorption
Collectors and stablizers used in froth flotation CORRECT
ANSWERS C: Pine oil, fatty acids, xanthates (enhance non-
wettability)
, S: cresols and aniline (to stabilize the froth)
Depressing agents for Zns and PbS CORRECT ANSWERS
NaCN and Na2CO3 (prevents ZnS and allows PbS)
Bayers process CORRECT ANSWERS Leaching of alumina
from bauxite
metallurgy of silver and that of gold CORRECT ANSWERS
leached with a dilute solution of NaCN or KCN in the presence
of air (or O2)
Mac-Arthur Forest Cyanide
Calcination CORRECT ANSWERS The heating process of
reducing the body, wrapping and/or the container to their basic
elements in the form of cremated remains through combustion.
Roasting CORRECT ANSWERS It is a process of heating the
concentrated ore (generally sulphide ore) strongly in the excess
of air or O2, below its melting point. It is an exothermic process,
once started it does not require additional heating
Also known as self reduction
100% Correct Answers
Hydraulic washing or Gravity separation CORRECT
ANSWERS based on the difference in the densities of the
gangue and or particles
Electromagnetic separation CORRECT ANSWERS Separation
based on differences in magnetic properties
Chromite ore (FeO.Cr2O3 ) is separated from non-magnetic
sillicious impurities and cassiterite ore (SnO2 ) is separated from
magnetic Wolframite (FeWO4 + MnWO4 ).
Froth floatation process CORRECT ANSWERS process used
for the concentration of the low grade sulphide ores like galena,
copper iron pyrites , ZnS
Principle of Adsorption
Collectors and stablizers used in froth flotation CORRECT
ANSWERS C: Pine oil, fatty acids, xanthates (enhance non-
wettability)
, S: cresols and aniline (to stabilize the froth)
Depressing agents for Zns and PbS CORRECT ANSWERS
NaCN and Na2CO3 (prevents ZnS and allows PbS)
Bayers process CORRECT ANSWERS Leaching of alumina
from bauxite
metallurgy of silver and that of gold CORRECT ANSWERS
leached with a dilute solution of NaCN or KCN in the presence
of air (or O2)
Mac-Arthur Forest Cyanide
Calcination CORRECT ANSWERS The heating process of
reducing the body, wrapping and/or the container to their basic
elements in the form of cremated remains through combustion.
Roasting CORRECT ANSWERS It is a process of heating the
concentrated ore (generally sulphide ore) strongly in the excess
of air or O2, below its melting point. It is an exothermic process,
once started it does not require additional heating
Also known as self reduction
