🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs171
Work done is a____________________?
AProperty of the system
BPath function
CPoint function
DState description of a system
172
For a constant pressure reversible process, the enthalpy change (ΔH) of the system is___________________?
ACv.dT
BCp.dT
C∫ Cp.dT
D∫ Cv.dT
173
When pressure is applied on the system, ice ↔ water, then_________________?
AEquilibrium cannot be established
BMore ice will be formed
CMore water will be formed
DEvaporation of water will take place
174
In an irreversible process________________?
ATds = dE – dW = 0
BdE – dW – Tds = 0
CTds – dE + dW
DTds – dT + dW < 0
175
The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 – T2)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2 is given by__________________?
AT1/(T1-T2)
BT2/(T1-T2)
CT1/T2
DT2/R1
176
An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to_________________?
A12 P1V1
B6 P1 V1
C3 P1V1
DP1 V1
177
The work done in an adiabatic change in a particular gas depends upon changes in the ______________ only?
ATemperature
BSpecific heat
CVolume
DPressure
178
Entropy change for an irreversible isolated system is__________________?
A∞
B0
CD. > 0
179
Which of the following is a thermodynamic property of a system ?
AConcentration
BMass
CTemperature
DEntropy
180
In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?
AMore
BLess
CSame
DUnpredictable; depends on the particular reaction