Related Questions

Which of the following is not a pyrite ore?
A Celestite
B Galena
C Gypsum
D Siderite
Heating of an ore below its melting point in presence of excess of air is called
A Calcination
B Smelting
C Roasting
D Sublimation
Heating of a ore below its melting point in the absence of air is known as
A Refining
B Calcination
C Roasting
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
The process of improving the quality of rubber by heating it with sulphur is called
A Vulcanization
B Acceleration
C Sulphonation
D Galvanization
Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about
A 0.1
B 1
C 2.5
D 3.5
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
If Dust is called Air, Air is called Fire, Fire is called Water, Water is called Colour, Colour is called Rain and Rain is called Dust, where do Fish live ?
A Dust
B Fire
C Colour
D Water

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