A.Q(T0 – T) = Ac. (dTH/dt)
B.Q(T0 – T) = Ac. h (dT/dt)
C.Q0T0 – QT = Ac. h (dT/dt)
D.Q0(T0 – T) = Ac. h (dT/dt)
Explanation: The correct answer is Q0(T0 – T) = Ac. h (dT/dt).
Submitted by: Academy of Pakistan
Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 303 of 557.
Chemical Engineering MCQs
Showing page 303 of 557 · 8,342 total solved questions available.
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A.Low viscosity
B.Low melting point
C.None of these
D.Good mechanical strength
Explanation: The correct answer is Good mechanical strength.
Submitted by: Academy of Pakistan
A.Poor visibility due to sky darkening
B.All A., B. and C.
C.Respiratory trouble
D.Irritation in eyes
Explanation: The correct answer is All A., B. and C..
Submitted by: Academy of Pakistan
A.1 – e-t/η
B.e-t/η/η
C.1 – (e-t/η/η)
D.e-t/η
Explanation: The correct answer is e-t/η/η.
Submitted by: Academy of Pakistan
A.No change
B.Fourfold increase
C.Doubling
D.1/4th reduction
Explanation: The correct answer is Doubling.
Submitted by: Academy of Pakistan
A.Require longer time of carbonisation as ash offers resistance to heat transfer
B.None of these
C.Produce larger quantity of coke oven gas
D.Are soft & friable (poor strength and size stability)
Explanation: The correct answer is Require longer time of carbonisation as ash offers resistance to heat transfer.
Submitted by: Academy of Pakistan
A.All refractory materials
B.Rubber and polymeric resins
C.Cotton, silk and paper
D.Asbestos, glass, porcelain and mica
Explanation: The correct answer is Rubber and polymeric resins.
Submitted by: Academy of Pakistan
A.Both A. & B.
B.Neither A. nor B.
C.Monochromatic
D.Total
Explanation: The correct answer is Both A. & B..
Submitted by: Academy of Pakistan
A.Sulphate
B.Sulphite
C.Semi-chemical
D.Ground-wood
Explanation: The correct answer is Ground-wood.
Submitted by: Academy of Pakistan
A.Barometric pressure
B.Both B. and C.
C.Speed of the impeller
D.Diameter of the impeller
Explanation: The correct answer is Barometric pressure.
Submitted by: Academy of Pakistan
For a first order chemical reaction, the concentration of the reactant decreases ________ with time?
0A.Inversely
B.Linearly
C.Exponentially
D.Logarithmically
Explanation: The correct answer is Linearly.
Submitted by: Academy of Pakistan
A.All A., B. and C.
B.Roughness of surface of the body
C.Length of the body in flow direction
D.Pressure of main flow only
Explanation: The correct answer is All A., B. and C..
Submitted by: Academy of Pakistan
A.20
B.18.7
C.21.7
D.27.3
Explanation: The correct answer is 18.7.
Submitted by: Academy of Pakistan
A.Cox
B.Enthalpy-concentration
C.Mollier’s
D.Ostwald
Explanation: The correct answer is Cox.
Submitted by: Academy of Pakistan
Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is________?
0A.At a fixed temperature
B.Non-ideal in nature
C.Soluble in the liquid
D.Insoluble in the liquid
Explanation: The correct answer is Insoluble in the liquid.
Submitted by: Academy of Pakistan