Related Questions

The 'shanks system' of leaching (i.e., counter-current multiple contact leaching) is used for
A Recovery of tannis from the tree barks and woods
B Leaching sodium nitrate from Chilean nitrate bearing rock
C Both A & B
D Neither A nor B
Experts say that 25% of all serious bicycle accidents involve head injuries and of all such head injuries, 80% are fatal. What percentage of all serious bicycle accidents involve fatal head injuries?
A 6%
B 20%
C 55%
D 105%
Which of the following is not a continuous leaching equipment?
A Pachuka tank
B Kennedy extractor
C Bollman extractor
D Hydrocyclones
Which of the following is the most commonly used leaching solvent in vegetable oil industry?
A Phenol
B Hexane
C Furfurol
D Liquid SO2
Who defined Operations Research as scientific method of providing executive departments with a quantitative basis for decisions regarding the operations under their control?
A Morse and Kimball (1946)
B P.M.S. Blackett (1948)
C E.L. Arnoff and M.J. Netzorg
D None of the above
A computer performs operations by comparing data items and then, depending on the results, follows predetermined course of action. What are such operations called?
A Sequential
B Logical
C Digital
D Physical
E None of the above
The typical soil of tropical region, formed by the weathering of laterite rock, which promotes leaching of the soil is
A laterite soils
B black soil
C red and yellow soil
D peat and marshy soil
Color of brass changes from yellow to __________ after its dezincification which exemplifies selective leaching.
A Grey
B Red
C Orange
D Violet
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.
A Binary mixture is represented by the apex
B Binary mixture is represented by any point inside
C Ternery mixture is represented by the sides
D Pure component is represented by the apex
Leaching of phosphate rock by strong __________ acid produces phosphoric acid.
A Sulphuric
B Hydrochloric
C Either A or B
D Neither A nor B

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