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.Management Sciences
Category: Chemical Engineering Basics
In the acid Bessemer process, the hot metal should have the following composition ?
A. S < 0.05% and P < 0.05%
B. S < 0.05% and P < 1.5%
C. S 1.5%
D. S > 1.5% and P < 0.05%
In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that ?
A. Compared to the mass flow rate of cooling water, the rate of condensation of steam is
invariably smaller
B. Maintaining vacuum on tube side is more difficult than that on the shell side
C. Water velocity can be increased conveniently to increase the overall heat transfer co-efficient
because of its lower specific volume compared to steam
D. Condenser can act as a storage unit for condensed steam
Primary designation of steel is based on its__________________?
A. Hardness & tensile strength
B. Carbon content
C. Iron content
D. Alloying elements content
Blast furnace slag is mainly molten_________________?
A. Sand
B. Magnesium silicate
C. Calcium silicate
D. Iron pyrite
Desalination of water__________________?
A. Makes it potable
B. Makes it non-potable
C. Means distillation of water
D. None of these
Euler number is defined as the ratio of inertia force to _______________ force?
A. Pressure
B. Elastic
C. Gravity
D. Viscous
Highest cutting speed is achieved by the _______________ tool material ?
A. High speed steel
B. Carbide
C. Cast alloy
D. Plain carbon steel
Which of the following does not discharge the dust collected as a dry solid?
A. Electrostatic precipitator
B. Wet scrubber
C. Bag filter
D. Gravity settling chamber
One ton of refrigeration is not equivalent to the heat removal rate of ____________________?
A. 200 BTU/minute
B. 50 kcal/minute
C. 50 kJ/sec
D. 3.5 KW
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