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.Management Sciences
Category: CHEMICAL ENGINEERING
Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is___________________?
A. Insoluble in the liquid
B. Soluble in the liquid
C. Non-ideal in nature
D. At a fixed temperature
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the _______________ moisture?
A. Free
B. Unbound
C. Equilibrium
D. Bound
Temporary hardness of water can be removed by__________________?
A. Addition of alum (a coagulant)
B. Boiling
C. Filtration (through gravity sand filter)
D. Addition of lime
Anion exchanger is regenerated usually with ____________________?
A. NaOH
B. H2SO4
C. Hydrazine
D. Alum solution
Ethyl alcohol cannot be produced_________________?
A. From waste sulphite substrate of paper mills
B. By Esterification and hydrolysis of ethylene
C. From molasses
D. None of these
The colour of gasoline is an indication of its _________________?
A. Octane number
B. Lead susceptibility
C. Gum forming tendency & thoroughness of refining
D. None of these
Electro deposition of metals i.e. electroplating is never done on_____________________?
A. Metals
B. Alloys
C. Refractories
D. Non-metals
Which of the following is not an antibiotic ?
A. Penicillin
B. Streptomycin
C. Tetracycline
D. Quinine
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