CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

4

1

3

2

U and S both decreases

U is constant but S decreases

U decreases but S is constant

Its internal energy (U) decreases and its entropy (S) increases

Same COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

Increased COP

Reduced

Critical

Boyle

Inversion

Solution of NaCl in water at 50°C

Expansion of an ideal gas against constant pressure

None of these

Atmospheric pressure vaporisation of water at 100°C

Lowest

Average

Highest

None of these

For some gases, Virial equations and ideal gas equations are the same

Virial co-efficients

Virial co-efficients are function of temperature only

Virial co-efficients are universal constants

Circle

Rhombus

Trapezoid

Rectangle

1 + (R/CV)

Cp/Cv

Cp/(CP-R)

All of these

Volume

Temperature

Mass

Pressure