A.Alkaline powders
B.Ammonia
C.Fine dolomite
D.None of these
Explanation: The correct answer is None of these.
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 91 of 557.
Chemical Engineering MCQs
Showing page 91 of 557 · 8,342 total solved questions available.
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A.Provide large surface area with a small amount of active material
B.Inhibit catalyst poisoning
C.Have very high selectivity
D.Increase the activity of a catalyst
Explanation: The correct answer is Provide large surface area with a small amount of active material.
Submitted by: Academy of Pakistan
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ________ °C?
0A.150-200
B.250-300
C.60-70
D.25
Explanation: The correct answer is 60-70.
Submitted by: Academy of Pakistan
A.A heating effect
B.No change in temperature
C.Either A. or (C)
D.A cooling effect
Explanation: The correct answer is A heating effect.
Submitted by: Academy of Pakistan
A.Simultaneous heating and expansion of an ideal gas
B.Reversible isothermal volume change
C.Cooling of a substance
D.Heating of a substance
Explanation: The correct answer is Simultaneous heating and expansion of an ideal gas.
Submitted by: Academy of Pakistan
A.Dark colored
B.Bleached easily
C.Strong fibrous
D.Dull white in color
Explanation: The correct answer is Strong fibrous.
Submitted by: Academy of Pakistan
A.The ratio of number of ideal plates to actual plates
B.Same as the Murphree efficiency
C.The ratio of number of actual plates to ideal plates
D.Always more than the point efficiency
Explanation: The correct answer is The ratio of number of ideal plates to actual plates.
Submitted by: Academy of Pakistan
A.Siderite
B.Magnetite
C.Chalcopyrite
D.Hematite
Explanation: The correct answer is Hematite.
Submitted by: Academy of Pakistan
A.Combination of induced current and skin effect
B.Flow of current through a heating element
C.None of these
D.Electric arc struck between electrodes and the charge
Explanation: The correct answer is Flow of current through a heating element.
Submitted by: Academy of Pakistan
A.Is indicated by flame sting out
B.None of these
C.Increases the flue gas temperature
D.Reduces its thermal efficiency
Explanation: The correct answer is Reduces its thermal efficiency.
Submitted by: Academy of Pakistan
A.100
B.1000
C.0.1
D.25
Explanation: The correct answer is 0.1.
Submitted by: Academy of Pakistan
A.10-4
B.10-2
C.10-6
D.10-8
Explanation: The correct answer is 10-4.
Submitted by: Academy of Pakistan
A.T and T3/2
B.T3/2 and T
Explanation: The correct answer is T3/2 and T.
Submitted by: Academy of Pakistan
A.5 to 10
B.20 to 25
C.50 to 70
D.0.1 to 2
Explanation: The correct answer is 0.1 to 2.
Submitted by: Academy of Pakistan
A.Absolute roughness decreases with time
B.Pipe becomes smoother with use
C.Friction factor increases linearly with time
D.Absolute roughness increases linearly with time
Explanation: The correct answer is Absolute roughness increases linearly with time.
Submitted by: Academy of Pakistan