🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs261
Change of state namely evaporation condensation, freezing and melting is an _______________ process?
AIsothermal
BAdiabatic
CIsobaric
DIsochoric
262
Co-efficient of Performance (COP) of a refrigerator is the ratio of the ______________________?
AWork required to refrigeration obtained
BRefrigeration obtained to the work required
CLower to higher temperature
DHigher to lower temperature
263
Claude gas liquefaction process employs cooling___________________?
AAt constant pressure
BBy throttling
CBy expansion in an engine
DNone of these
264
Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be___________________?
ASame
BDoubled
CHalved
DOne fourth of its original value
265
The activity of an ideal gas is numerically ____________ its pressure?
AMore than
BLess than
CEqual to
DData insufficient, can’t be predicted
266
Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass ?
AdE = Tds – PdV
BdQ = CvdT + PdV
CdQ = CpdT + Vdp
DTds = dE – PdV
267
The internal energy of a gas obeying P (V – b) RT (where, b is a positive constant and has a constant Cv), depends upon its________________?
APressure
B& C
CTemperature
DAll A,
268
If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be ______________ c.c?
A100
B50
C205
D200
269
All gases above its inversion temperature, in a throttling process will show__________________?
Aor (
BNo change in temperature
CA cooling effect
DEither
270
With increase in temperature, the internal energy of a substance___________________?
AIncreases
BDecreases
CRemains unchanged
DMay increase or decrease; depends on the substance