Checmical Engineering Mcqs
Q.1: Pick out the wrong statement?
A. Cp of monatomic gases such as metallic vapor is about 5 kcal/kg.atomD
B. The heat capacity of solid inorganic substance is exactly equal to the heat capacity of the[
C. substance in the molten state
D. There is an increase in entropy, when a spontaneous change occurs in an isolated systemW
Q.2: Pick out the correct statement?
A. The available energy in an isolated system for all irreversible (real) processes decreasesZ
B. The efficiency of a Carnot engine increases, if the sink temperature is decreasedQ
C. The reversible work for compression in non-flow process under isothermal condition is theY
D. change in Helmholtz free energy
Q.3: Pick out the wrong statement ?
A. The expansion of a gas in vacuum is an irreversible process;
B. An isometric process is a constant pressure process3
C. Entropy change for a reversible adiabatic process is zero9
D. Free energy change for a spontaneous process is negative8
Q.4: Pick out the correct statement?
A. Compression ratio of an Otto engine is comparatively higher than a diesel engineP
B. Efficiency of an Otto engine is higher than that of a diesel engine for the same compression\
C. ratio
D. Otto engine efficiency decreases with the rise in compression ratio, due to decrease in work\
Q.5: Pick out the extensive property out of the following ?6
A. Surface tension
B. Free energy
C. Specific heat
D. Refractive index
Q.6: Pick out the wrong statement?
A. A refrigeration cycle violates the second law of thermodynamics?
B. Refrigeration cycle is normally represented by a temperature vs. entropy plotM
C. In a refrigerator, work required decreases as the temperature of the refrigerator and theY
D. temperature at which heat is rejected increases/
Q.7: Pick out the wrong statement?
A. Surface tension of a substance vanishes at critical point, as there is no distinction between]
B. liquid and vapour phases at its critical point.
C. Entropy of a system decreases with the evolution of heat8
D. Change of internal energy is negative for exothermic reactions>
Q.8: Pick out the correct statement ?
A. In an isothermal system, irreversible work is more than reversible workG
B. Under reversible conditions, the adiabatic work is less than isothermal workL
C. Heat, work, enthalpy and entropy are all state functions>
D. Matter and energy cannot be exchanged with the surroundings in a closed systemN
Q.9: Pick out the wrong statement ?
A. Activity co-efficient is dimensionless.'
B. In case of an ideal gas, the fugacity is equal to its pressure.?
C. In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the`
D. component.
Q.10: Pick out the wrong statement?
A. The values of (P/V)T and (2P/V2)T are zero for a real gas at its critical point[
B. Heat transferred is equal to the change in the enthalpy of the system, for a constant pressure,_
C. non-flow, mechanically reversible process)
D. Thermal efficiency of a Carnot engine depends upon the properties of the working fluidV

Related Mcqs

All Subject Mcqs