Related Questions

Concentration of sulphide ores is done usually by
A Roasting
B Smelting
C Froth floatation
D Electro magnetic separation
Calcination of iron ores is done
A To remove moisture
B To remove carbonic acid
C By roasting in heaps
D All the above
The product (s) of roasting of a sulphide ore is (are)
A Oxide only
B Sulphate only
C Oxide and sulphate
D Dependent on temperature and partial pressure of oxygen & sulphur dioxide
Department ores range form two to nine floors in height. If a store has more than three floors , it has a lift. If he statements above are true, which of the following must also be true?
A Second floors do not have lifts
B Fourth floors have lifts
C Only floors above third floor have lifts
D All floors may be reached by lifts
Which of the following ores contains maximum percentage of uranium?
A Rescolite
B Thorium
C Pitchblende
D Carnotite
Pig iron is manufactured from the ores by
A Dressing
B Calcination and roasting
C Smelting
D All the above
There is practically no alternative/competitor to __________ in the beneficiation treatment of sulphide ores.
A Classification
B Tabling
C Jigging
D Froth floatation
Among the following iron ores, the highest percentage of iron content is found in–
A Haemetite
B Magnetite
C Limnonite
D None of these
Corundum and Cryolite are important ores of which of the following metals?
A Silver
B Iron
C Aluminium
D Tin
The fuel mostly used in blast furnace for extracting pig iron from iron ores is
A Hard coke
B Soft coke
C Pulverized coal
D Bituminous coal

Next steps