πChemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs91
The expression for entropy change, ΞS = n Cp . ln (T2/T1), is valid for the ______________ of a substance?
ASimultaneous pressure & temperature change
Band C
CCooling
DBoth
92
Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is__________________?
A1
B2
C3
D4
93
For a real gas, the chemical potential is given by_____________________?
ART d ln P
BRT d ln f
CR d ln f
DNone of these
94
The free energy change for a chemical reaction is given by (where, K = equilibrium constant)________________?
ART ln K
B-RT ln K
C-R ln K
DT ln K
95
For the reversible exothermic reaction, N2 + 3H2 β 2NH3, increase of pressure would________________?
Anor B
Band C
CBoth
DNeither
96
Heat is added at constant pressure in an ideal _____________ cycle?
AStirling
Band C
CRankine
DBoth
97
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of______________?
AFusion
BVaporisation
CTransition
DNone of these
98
Heat is added at constant temperature in an ideal ______________ cycle?
AStirling
BBrayton
CRankine
DNone of these
99
A gas can be liquefied by pressure alone only, when its temperature is _____________ its critical temperature?
ALess than
BMore than
CEqual to or higher than
DLess than or equal to
100
βIf different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of themβ. This is ______________ law?
AHessβs
BKirchoffβs
CLavoisier and Laplace
DNone of these