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.Management Sciences
Category: Chemical Engineering Basics
Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank) ?
0
A. H
B. H/2
C. H/4
D. H/6
Density in the solid state is slightly less than that in its liquid state, in case of____________________?
A. Carbon dioxide
B. Water
C. Mercury
D. None of these
In “Imperial Smelting Process” for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following _______________________?
A. Jet of water at high pressure
B. Blast of air
C. Mixture of water and air
D. Rain of molten lead
The refractory lining of the bottom in a basic electric arc furnace is made of___________________?
A. Silica
B. Alumina
C. Magnesia
D. Fireclay
Eutectoid composition of carbon steel at room temperature is___________________?
A. Cementite
B. Pearlite
C. Martensite
D. Ferrite
____________________ flux is used for the extraction of metal from its self fluxing ores?
A. No
B. Acid
C. Basic
D. Neutral
Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are _______________ respectively ?
A. 70 & 30
B. 30 & 70
C. 50 & 50
D. 90 & 10
While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterized by the ?
A. Low impact strength
B. High flexibility
C. Better finish and surface appearance
D. High plastic deformation
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