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.Management Sciences
Category: Chemical Process
Reaction of calcium carbide with water produces a gas, which is used_________________?
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A. As an illuminant
B. For metal cutting/welding
C. Both A. & B.
D. Neither A. nor B.
Roasting of metallurgical ores is done mainly to ___________________?
A. Dehydrate it
B. Sinter the ore
C. Remove CO2 & H2O
D. Remove arsenic & sulphur
______________ is obtained as a by-product in the manufacture of sodium hydroxide using brine ?
A. Chlorine
B. Ammonium chloride
C. Sodium carbonate
D. Sodium bi-carbonate
Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?
A. 1 – 2
B. 15 – 20
C. 50 – 60
D. 80 – 85
Naphthalene is removed from coke oven gas by ________________________?
A. Adsorbing on palladium
B. Absorbing in ethanolamine
C. Scrubbing with wash oil
D. Passing it through electrostatic precipitator
High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?
A. Flocculate the impurities
B. Facilitate fast filtration
C. Both A. and B.
D. Neither A. nor B.
Hydrophilic group of a soap or detergent solution is____________________?
A. Water hating
B. Soil loving
C. Water loving
D. None of these
Mannheim furnace is used in the manufacture of_________________?
A. Hydrochloric acid
B. H2SO4 by Chamber process
C. Calcium carbide
D. Corundum
Salt is added in the kettle during soap manufacture to separate ___________________?
A. Soap from lye
B. Glycerine from lye
C. The metallic soap
D. The unsaponified fat from soap
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