A. Disorder
B. Orderly behaviour
C. Temperature changes only
D. None of these
✅ The correct answer is option A.
Chemical Engineering MCQs
Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have
High electrical insulation properties
Sharp melting points
Low co-efficient of thermal expansion
Compressive strength much greater than their tensile strengths
✅ The correct answer is option B.
Heat of reaction at constant volume is identified with __________ change.
A. Enthalpy
B. Internal energy
C. Either A or B
D. Neither A nor B
✅ The correct answer is option B.
The minimum number of phases that can exist in a system is
A. 0
B. 1
C. 2
D. 3
✅ The correct answer is option B.
A change in state involving a decrease in entropy can be spontaneous, only if
A. It is exothermic
B. It is isenthalpic
C. It takes place isothermally
D. It takes place at constant volume
✅ The correct answer is option A.
Zeigler process
Produces high density polyethylene
Produces low density polyethylene
Uses no catalyst
Employs very high pressure
✅ The correct answer is option A.
For an ideal solution, the value of activity co-efficient is
A. 0
B. 1
C. < 1
D. > 1
✅ The correct answer is option B.
A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect?
A. Vapor compression cycle using expansion valve
B. Air refrigeration cycle
C. Vapor compression cycle using expansion engine
D. Carnot refrigeration cycle
✅ The correct answer is option D.
The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature.
A. Critical
B. Boyle
C. Inversion
D. Reduced
✅ The correct answer is option B.
Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates
A. Use of only one graph for all gases
B. Covering of wide range
C. Easier plotting
D. More accurate plotting
✅ The correct answer is option A.