Chemical Engineering MCQs

6108 MCQs  (Page 587 of 611)

For an exothermic reaction ____________________?
A. Only enthalpy change (δh) is negative
B. Only internal energy change (δe) is negative
C. Both δh and δe are negative
D. Enthalpy change is zero
Which of the following is Virial equation of state ?
A. (p + a/v2)(v – b) = nrt
B. Pv = nrt
C. Pv = a + b/v + c/v2 + d/v3 + …
D. None of these
Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the__________________?
A. Two temperatures only
B. Pressure of working fluid
C. Mass of the working fluid
D. Mass and pressure both of the working fluid
A gas performs the maximum work, when it expands___________________?
A. Non-uniformly
B. Adiabatically
C. Isobarically
D. Isothermally
Absolute zero temperature signifies the ____________________?
A. Minimum temperature attainable
B. Temperature of the heat reservoir to which a carnot engine rejects all the heat that is taken in
C. Temperature of the heat reservoir to which a carnot engine rejects no heat
D. None of these
Melting of ice exemplifies a/an______________________?
A. Adiabatic process
B. Endothermic reaction
C. Exothermic reaction
D. Process involving a chemical reaction