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.Management Sciences
Category: CHEMICAL ENGINEERING
Shrinkage allowance on pattern is provided to compensate for shrinkage when the _____________________?
A. Metal changes from liquid state to solid state at freezing temperature
B. Solid phase temperature drops from freezing temperature to the room temperature
C. Liquid metal temperature drops from pouring temperature to room temperature
D. Liquid metal temperature drops from pouring temperature to freezing temperature
Coke oven walls are lined with _____________ bricks?
A. Silica
B. Tar-dolomite
C. Low thermal conductivity
D. Fire clay
The function of gypsum addition during cement making is to_________________?
A. Increase the density of cement
B. Decrease the cement setting rate
C. Both A. and B.
D. Neither A. nor B.
If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatelier’s principle)?
A. Decreases
B. Increases
C. Remains unaltered
D. Changes unpredictably
For storing water and acid free benzol, use a ______________ vessel?
A. Steel
B. Karbate
C. Stainless steel
D. None of these
Terylene is__________________?
A. Same as Dacron
B. A polyester
C. Both A. & B.
D. Neither A. nor B.
The velocity profile for a Bingham plastic fluid flowing (under laminar conditions) in a pipe is__________________?
A. Parabolic
B. Flat
C. Flat near the wall and parabolic in the middle
D. Parabolic near the wall and flat in the middle
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in_________________?
A. Decreased solute solubility
B. Large minimum liquid to gas (L/G) ratio
C. Large number of trays
D. All A., B. and C.
The major use of butadiene is____________________?
A. As a plasticiser for unsaturated polyester
B. In the manufacture of synthetic rubber
C. As an anti-skinning agent in paint
D. None of these
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