A.10-5 to 10-6
B.0.1
C.> 1
D.0.01
Explanation: The correct answer is 10-5 to 10-6.
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 382 of 557.
Chemical Engineering MCQs
Showing page 382 of 557 · 8,342 total solved questions available.
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A.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
B.Disk and doughnut baffle is the most commonly used baffle
C.The minimum value of baffle spacing is 50 mm
D.The maximum value of baffle spacing is equal to the I.D. of the shell
Explanation: The correct answer is Disk and doughnut baffle is the most commonly used baffle.
Submitted by: Academy of Pakistan
I.D. of 1/4′′ schedule 40 pipe is 0.364′′. I.D. of a 1/2′′ schedule 40 pipe would be ________ inch?
0A.0.474
B.4.728
C.0.5
D.0.622
Explanation: The correct answer is 0.622.
Submitted by: Academy of Pakistan
A.Increases the speed of a
B.Can either increase or decrease the speed of a
C.Decreases the speed of a
D.Alters the value of equilibrium constant in a reversible
Explanation: The correct answer is Can either increase or decrease the speed of a.
Submitted by: Academy of Pakistan
A.Temperature
B.All a, b & c
C.Volume
D.Pressure
Explanation: The correct answer is Volume.
Submitted by: Academy of Pakistan
A.Humidified
B.Both A. & B.
C.Dehumidified
D.Cooled
Explanation: The correct answer is Humidified.
Submitted by: Academy of Pakistan
A.0.55-0.85
B.0.35-0.75
C.0.4-0.6
D.0.1-0.2
Explanation: The correct answer is 0.1-0.2.
Submitted by: Academy of Pakistan
A.Middling
B.Concentrate
C.Heading
D.Tailing
Explanation: The correct answer is Heading.
Submitted by: Academy of Pakistan
A.None of these
B.Dust & mists
C.Photochemical smog & soot
D.Smoke & fumes
Explanation: The correct answer is None of these.
Submitted by: Academy of Pakistan
A.Joule/m
B.Watt/m
C.Joule/m2
D.Newton/m2
Explanation: The correct answer is Joule/m2.
Submitted by: Academy of Pakistan
A.gm moles/cm2. sec
B.cm2/sec gm. mole
C.gm moles/cm. sec
Explanation: The correct answer is gm moles/cm. sec.
Submitted by: Academy of Pakistan
A.Lead
B.Magnesium
C.Cadmium
D.Aluminium
Explanation: The correct answer is Magnesium.
Submitted by: Academy of Pakistan
A.0.5
B.0.66
C.1.0
D.2.76
Explanation: The correct answer is 0.66.
Submitted by: Academy of Pakistan
A.Is highly paraffinic
B.Has a large ignition delay
C.Has a low diesel index
D.Is highly aromatic
Explanation: The correct answer is Is highly paraffinic.
Submitted by: Academy of Pakistan
A.Burns when heated in air
B.Reacts with hot caustic soda solution to give Phosphine
C.All A., B., and C.
D.Are soluble in CS2
Explanation: The correct answer is Burns when heated in air.
Submitted by: Academy of Pakistan