CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

Gibbs free energy at constant pressure and temperature under equilibrium conditions is

Minimum

Maximum

∞

TRUE ANSWER : ?
YOUR ANSWER : ?

During a reversible isothermal expansion of an ideal gas, the entropy change is

∞

-ve

+ve

TRUE ANSWER : ?
YOUR ANSWER : ?

Ideal gas law is applicable at

Low T, high P

High T, low P

High T, high P

Low T, low P

TRUE ANSWER : ?
YOUR ANSWER : ?

The heat capacities for the ideal gas state depend upon the

Pressure

Neither A nor B

Temperature

Both A & B

TRUE ANSWER : ?
YOUR ANSWER : ?

The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

-R lnK

T lnK

-RT lnK

RT lnK

TRUE ANSWER : ?
YOUR ANSWER : ?

A gas shows deviation from ideal behaviour at

High temperature and high pressure

Low pressure and high temperature

Low pressure and low temperature

Low temperature and high pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following will increase the volume of a real gas by four times ?

Reducing the temperature to half and doubling the pressure

Doubling the absolute temperature as well as pressure of the gas

Reducing pressure to one fourth at constant temperature

Reducing temperature to one fourth at constant pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

For a constant pressure reversible process, the enthalpy change (ΔH) of the system is

∫Cv.dT

∫Cp.dT

Cv.dT

Cp.dT

TRUE ANSWER : ?
YOUR ANSWER : ?

An ideal liquid refrigerant should

Have low specific heat

Not have unduly high vapour pressure at the condenser temperature

Both A and B

Not have a subatmospheric vapour pressure at the temperature in the refrigerator coils

TRUE ANSWER : ?
YOUR ANSWER : ?

Pick out the extensive property out of the following.

Surface tension

Free energy

Refractive index

Specific heat

TRUE ANSWER : ?
YOUR ANSWER : ?