QuestionNo:1
Gravity separation method is based upon
[A] Preferential washing of ores and gangue particles
[B] Difference in densities of ore particles and impurites
[C] Difference in chemical properties of ore particles and impurites
[D] None of these.
QuestionNo:2
Which method is used for the purification of bauxite ore ?
[A] Levigation
[B] Leaching
[C] Electrolysis
[D] Magnetic separation
QuestionNo:3
Which of the following concentration processes will you use when the gangue is light ?
[A] Gravity separation
[B] Magnetic separation
[C] Froth floatation
[D] None of these
QuestionNo:4
In the froth floatation process for the purification of minerals the particles float because
[A] They are light
[B] They are insoluble
[C] Their surface is preferentially wetted by oil
[D] They bear an electrostatic charge
QuestionNo:5
Gravity separation process may be used for the concentration of.
[A] Chalcopyrite
[B] bauxite
[C] Haematite
[D] Calamine
QuestionNo:6
Copper pyrites is concentrated by
[A] Froth floatation process
[B] Gravity separation
[C] Distillation
[D] Fractionation.
QuestionNo:7
Which of the following is used as a foaming agent in froth floatation process?
[A] Pine oil
[B] Amyl xanthate
[C] CuSO4
[D] KCN
QuestionNo:8
Leaching is a process of:
[A] reduction
[B] concentration
[C] refining
[D] oxidation
QuestionNo:9
Leaching process is used to get:
[A] Ag
[B] Au
[C] both (a) and (b)
[D] none of these
QuestionNo:10
The extraction of metal from the ore is
[A] an oxidation process
[B] a reduction process
[C] a hydration process
[D] a neutralisation process
QuestionNo:11
Carbon cannot be used to reduce
[A] ZnO
[B] SnO2
[C] Fe2O3
[D] Al2O2
QuestionNo:12
water gas is the most suitable reducing agent to reduce
[A] A13O3
[B] NiO
[C] Cr2O 3
[D] Mn3 O4
QuestionNo:13
Hydro metallurgy is used in the extraction of
[A] Cu
[B] Al
[C] Mg
[D] Na
QuestionNo:14
Silver is displaced when zinc is added to aqueous sodium argento cyanide this method of extracting silver is an example for
[A] Leaching
[B] Hydro metallurgy
[C] Pyrometallurgy
[D] Liquation
QuestionNo:15
The weakest reducing agent among the following is
[A] Hydrogen Gas
[B] Coke
[C] Carbon monoxide gas
[D] Aluminium metal
Metallurgy Mock Test-2
CategoriesNEET Chemistry