Chemical Engineering MCQs

6108 MCQs  (Page 554 of 611)

Attempt Chemical Engineering Quiz
COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about____________________?
A. 0.5
B. 3.5
C. 4.5
D. 8.5
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The unity of Planck’s constant ‘h’ in the equation, E = hv is____________________?
A. J/s
B. J.s
C. J/kmol
D. Kmol/j
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The value of gas constant ‘R’ is__________________?
A. 1.987 cal/gm mole °k
B. 1.987 btu/lb. mole °r
C. Both a. and b
D. Neither a. nor b
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Which is not a refrigerant ?
A. So2
B. Nh3
C. Ccl2f2
D. C2h4cl2
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When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is___________________?
A. Same in both the phases
B. Zero in both the phases
C. More in vapour phase
D. More in liquid phase
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Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which___________________?
A. A homogeneous solution (say of phenol water) is formed
B. Mutual solubility of the two liquids shows a decreasing trend
C. Two liquids are completely separated into two layers
D. None of these
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Maxwell’s relation corresponding to the identity, dH = dS = Vdp + Σμi dni is_____________________?
A. (∂t/∂v)s, ni = -(∂p/∂s)v, ni
B. (∂s/∂p)t, ni = (∂v/∂t)p, ni
C. (∂s/∂v)t, ni = (∂p/∂t)v, ni
D. (∂t/∂p)s, ni = (∂v/∂s)p, ni
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A system is said to be isopiestic, if there is no ______________ change?
A. Temperature
B. Pressure
C. Volume
D. None of these
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What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor ?
A. 2
B. 0
C. 3
D. 1
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Which of the following is not an equation of state ?
A. Bertholet equation
B. Clausius-clapeyron equation
C. Beattie-bridgeman equation
D. None of these
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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