Related Questions

Sulphur removal by heating of pyrite ore in presence of air is called its
A Reduction
B Roasting
C Calcination
D Smelting
Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother?
A Cresylic acid
B Xanthaies
C Pine oil
D All of the above
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
A liquation
B leaching
C levigation
D magnetic separation
Ore concentration by froth floatation utilises the __________ of ore particles.
A Density difference
B Wetting characteristics
C Terminal velocities
D None of these
Leaching of uranium ore and gold ore is done in
A Centrifugal extractor
B Pachuka tanks
C Bollman extractor
D None of these
Which of the following is not an ore of copper?
A Malachite
B Azurite
C Copper glance
D Galena
Which of the following is not an ore of Magnesium?
A Cassiterite
B Dolomite
C Kieserite
D Carnallite
Which of the following is not an ore of zinc?
A Limonite
B Zincite
C Calamine
D Franklinite
Which of the following is not an iron ore?
A Hematite
B Magnetite
C Cryolite
D Limonite
Which of the following is not an ore of uranium?
A Kyanite
B Pitchblende
C Carnotite
D Rescolite

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