Chemical Engineering MCQs

6108 MCQs  (Page 559 of 611)

Attempt Chemical Engineering Quiz
Which of the following has the minimum value of COP for a given refrigeration effect ?
A. Reverse carnot cycle
B. Ordinary vapour-compression cycle
C. Vapour-compression process with a reversible expansion engine
D. Air refrigeration cycle
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Partial molar free energy of an element A in solution is same as its__________________?
A. Chemical potential
B. Activity
C. Fugacity
D. Activity co-efficient
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Entropy of the system decreases, when_______________?
A. Snow melts into water
B. A gas expands spontaneously from high pressure to low pressure
C. Water is converted into ice
D. Both b. & c
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A gas shows deviation from ideal behaviour at______________?
A. Low pressure and high temperature
B. Low pressure and low temperature
C. Low temperature and high pressure
D. High temperature and high pressure
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The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is________________?
A. (∂t/∂v)s = – (∂p/∂s)v
B. (∂s/∂p)t = – (∂v/∂t)p
C. (∂v/∂s)p = (∂t/∂p)s
D. (∂s/∂v)t = (∂p/∂t)v
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Specific heat of a gas for a reversible adiabatic process is________________?
A. Negative
B. Zero
C. Infinity
D. None of these
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Heat requirement for decomposition of a compound into its elements is _____________ that is evolved during the formation of that compound from its elements?
A. The same
B. Less than
C. Greater than
D. Different than
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For an ideal gas, the chemical potential is given by______________?
A. Rt d ln p
B. R d ln p
C. R d ln f
D. None of these
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If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will___________________?
A. Increase
B. Decrease
C. Remain unaltered
D. Increase or decrease; depends on the particular reaction
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The thermodynamic law, PVy = constant, is not applicable in case of______________?
A. Ideal compression of air
B. Free expansion of an ideal gas
C. Adiabatic expansion of steam in a turbine
D. Adiabatic compression of a perfect gas
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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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