Search
.Management Sciences
Category: CHEMICAL ENGINEERING
Chance process is used for the________________?
A. Cleaning of coal
B. Concentration of iron ore
C. Concentration of pyrites
D. Water treatment
On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will____________________?
A. Increase
B. Decrease
C. Remain same
D. Increase in summer and will decrease in winter
Which of the following coals has the highest calorific value ?
A. Lignite
B. Sub-bituminous
C. Anthracite
D. Peat
Dacron is a _____________________________?
A. Condensation polymerisation product of Hexamethylene diamine and adipic acid
B. Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol
C. Thermosetting material
D. None of these
Pick out the wrong statement ?
A. Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its
chemical oxygen demand (C.O.D.) value
B. Environmental pollution by NOx emission is much higher by four stroke petrol engines as
compared to the two stroke engines
C. Temperature in stratosphere rises with increasing altitude
D. The characteristic of a green house body is that it allows the long wavelength incoming solar
radiation to come in but does not allow the short wavelength infra red radiation to escape out
of the earth’s atmosphere
Promoter_____________________?
A. Initiates a chemical reaction and is a catalyst by itself
B. Alters the position of equilibrium in a reversible reaction
C. Increases the number of active centres by increasing the unevenness of catalyst surface and by
creating discontinuities in the crystals
D. All A., B. and C.
The actual temperature drop across the heating surface in an evaporator depends on the_________________?
A. Feed
B. Depth of liquid over heating surface
C. Pressure difference between steam chest and vapour space
D. All A., B. and C.
Recent Comments