Category: CHEMICAL ENGINEERING
“Overfire burning” in a furnace is a phenomenon characterised by the __________________?
A. Supply of excess fuel
B. Supply of excess air
C. Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying
more air
D. None of these
The energy of activation of exothermic reaction is_________________?
A. Zero
B. Negative
C. Very large compared to that for endothermic reaction
D. Not possible to predict
The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)__________________?
A. ∝ ΔP
B. ∝ 1/ ΔP
C. ∝ √ΔP
D. Independent of ΔP
In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is___________________?
A. The velocity of sound
B. Dependent on its cross-sectional area
C. Dependent on fluid viscosity
D. Dependent on fluid density
Epoxy resin is a polymer containing two or more groups of the bellow fig. is called epoxide group or ethoxyline group. It is a _______________?
A. Polyamide & an elastomer
B. Good adhesive
C. Surface coating agent
D. Both B. and C.
What is the value of ln y (where y = activity co-efficient) for ideal gases ?
A. Zero
B. Unity
C. Infinity
D. Negative
Ceramic recuperators compared to metallic recuperators for the same duty_________________?
A. Are lighter
B. Occupy more space
C. Are less costly
D. Have higher pressure differential between flue gas & air side
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the_________________?
A. Space time for each parallel line is same
B. Space time for parallel lines is different
C. Larger reactors have more space time compared to smaller ones
D. None of these
Which of the following is not a colligative property ?
A. Osmotic pressure
B. Depression of freezing point
C. Lowering of vapor pressure
D. None of these
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