Related Questions

Haematite is an ore/mineral of
A Zinc
B Iron
C Lead
D Manganese
The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to
A Grey cast iron
B White cast iron
C Mottled cast iron
D Toughed cast iron
Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as
A Bessemer pig
B Grey or foundry pig
C White or forge pig
D Mottled pig
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
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
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
An ore contains 26% of copper . To get 91 kgs of copper the quantity of are required is -
A 350 kg
B 240 kg
C 340 kg
D None of these
[Create meaningful sentence form the following jumble] Paradoxically, -------. P) with which he was charged, Q) the imputation, R) the guiltier he was of the offense S) the ore he resented
A RPSQ
B QPRS
C RSQP
D RQPS
Which of the following is not an ore of copper?
A Malachite
B Azurite
C Copper glance
D Galena

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