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.Management Sciences
Category: CHEMICAL ENGINEERING
____________________ strain is measured using a ‘strain rosetter’ ?
A. Volumetric
B. Shear
C. Linear
D. None of these
Pick out the wrong statement pertaining to a shell and tube heat exchanger ?
A. The minimum value of baffle spacing is 50 mm
B. The maximum value of baffle spacing is equal to the I.D. of the shell
C. The maximum unsupported tube span is generally about 75 times tube diameter, but is reduced to about 60 times for aluminium, copper & alloys of these
D. Disk and doughnut baffle is the most commonly used baffle
Bleaching of paper pulp is done with__________________?
A. Activated clay
B. Bromine
C. Chlorine or chlorine dioxide
D. Magnesium sulphite
Addition of silicon to cast iron ___________________?
A. Promotes graphite module formation
B. Improves its ductility
C. Does not promote graphite flakes formation
D. Increases the fluidity of molten metal
Lagooning process is mainly a means of the__________________?
A. Sludge disposal
B. Reduction of excessive flow in sewers
C. Biological treatment of wastes
D. None of these
Which of the following fuel gases contains maximum amount of carbon monoxide ?
A. Coke oven gas
B. Water gas
C. Blast furnace gas
D. L.D. converter gas
A pipe is defined as ‘hydraulically smooth’, if the friction factor_________________?
A. Is not a function of Reynolds number
B. For a given Reynolds number remains constant even on further smoothening of the pipe
C. Is zero irrespective of the Reynolds number
D. None of these
Mode of heat transfer involved in the cooling of air cooled internal combustion engine is_________________?
A. Conduction
B. Natural convection
C. Forced convection
D. None of these
Plasticisers are added to synthetic plastics to ________________?
A. Impart flexibility
B. Improve workability during fabrication
C. Develop new improved properties not present in the original resin
D. All A., B. and C.
“Break-even point” is the point of intersection of_____________________?
A. Fixed cost and total cost
B. Total cost and sales revenue
C. Fixed cost and sales revenue
D. None of these
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