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.Management Sciences
Category: CHEMICAL ENGINEERING
Width of the coke oven towards coke side is slightly more than that on pusher side to____________________?
A. Facilitate easy discharging of coke as it swells during carbonisation
B. Facilitate uniform heating of the oven
C. Increase the output of the coke
D. None of these
The LMTD correction factor (FT) is defined as the __________________?
A. Ratio of true temperature difference to the LMTD
B. Ratio of LMTD to the true temperature difference
C. Differenced of true temperature difference and the LMTD
D. Geometric mean of the true temperature difference and the LMTD
A hot body will radiate heat most rapidly, if its surface is___________________?
A. White & rough
B. Black & rough
C. White & polished
D. Black & polished
Brittleness induced due to the presence of sulphur in steel can be reduced by adding______________?
A. Manganese
B. Magnesium
C. Vanadium
D. Copper
Maraging steels derive their strength from the following mechanism ?
A. A fine, highly dislocated and strong martensite
B. Fine dispersions of inter-metallic of Fe, Ni, Ti etc
C. Fine dispersions of alloy carbides in a ferrite matrix
D. Fine dispersions of Fe3 C nucleated on dislocations in austenite
Raw materials are charged in the iron blast furnace using____________________?
A. Bucket elevator
B. Skip hoist
C. Screw conveyor
D. None of these
Glass lined vessels are not used for handling__________________?
A. Dilute H2SO4
B. Dilute HNO3
C. Dilute HCI
D. Hydrofluoric acid
Optimum economic pipe diameter for fluid is determined by the___________________?
A. Viscosity of the fluid
B. Density of the fluid
C. Total cost considerations (pumping cost plus fixed cost of the pipe)
D. None of these
Neoprene is chemically known as___________________?
A. Polybutadiene
B. Styrene butadiene rubber (SBR)
C. Polyurethane
D. Polychlorophrene
A series of equal payments (e.g., deposit or cost) made at equal intervals of time is known as __________________?
A. Perpetuity
B. Capital charge factor
C. Annuity
D. Future worth
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