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.Management Sciences
Category: Chemical Process
Finely ground calcium aluminate & silicate is a/an ____________________?
A. Cermet
B. Cement
C. Abrasive
D. Explosive
Glauber’s salt is chemically represented by____________________?
A. Na2SO4.10H2O
B. CaCl(OCl)
C. CaSO4.H2O
D. (NH4)2SO4
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as____________________?
A. Bakelite
B. Neoprene
C. Teflon
D. Nylon-66
Systemic insecticides________________?
A. Are absorbed throughout the plant
B. Kill insects following external bodily contact
C. Are stomach poisons
D. Emit poisonous vapour
Celluloid is chemically___________________?
A. Cellulose acetate
B. Regenerated cellulose
C. Cellulose nitrate
D. Cellulose acetate butyrate
Lime and soda ash are added to water to remove ___________________?
A. Bicarbonates & sulphates of calcium and magnesium
B. Undesirable taste and odour
C. Bacteria
D. Its corrosiveness
Deaeration of water in its treatment is necessary, as it___________________?
A. Minimises its turbidity
B. Helps in controlling its taste and odour
C. Minimises its corrosiveness
D. None of these
Coke oven gas consists mainly of ____________________?
A. H2, & CH4
B. CO, & CO2
C. H2, & CO
D. CH4, & CO
Pick out the wrong statement ?
A. Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%
B. Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%
C. 75% oleum can be produced by distillation of 20% oleum
D. Contact process of sulphuric acid manufacture uses nickel as the catalyst
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