CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

In jet refrigerators, the refrigerating fluid is practically always

Ammonia

Freon

Water

Brine

TRUE ANSWER : ?
YOUR ANSWER : ?

In the reaction, H₂ +I₂ ⇋ 2HI, addition of an inert gas will

Increase the partial pressure of I₂

Increase the total pressure and hence shift the equilibrium towards the right

Increase the partial pressure of H₂

Not effect the equilibrium conditions

TRUE ANSWER : ?
YOUR ANSWER : ?

Ideal refrigeration cycle is

Dependent on the refrigerant's properties

Same as reverse Carnot cycle

Same as Carnot cycle

The least efficient of all refrigeration processes

TRUE ANSWER : ?
YOUR ANSWER : ?

As the time is passing, entropy of the universe

Data insufficient, can't be predicted

Is decreasing

Is increasing

Remains constant

TRUE ANSWER : ?
YOUR ANSWER : ?

At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is

One

Zero

Negative

Infinity

TRUE ANSWER : ?
YOUR ANSWER : ?

Cv is given by

(∂E/∂V)T

(∂E/∂P)V

(∂E/∂T)V

(∂V/∂T)P

TRUE ANSWER : ?
YOUR ANSWER : ?

Refrigeration cycle

Violates second law of thermodynamics

Involves transfer of heat from low temperature to high temperature

Neither A nor B

Both A and B

TRUE ANSWER : ?
YOUR ANSWER : ?

Melting of wax is accompanied with __________ in entropy.

Decrease

No change

Increase

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In polytropic process (PVn = constant), if n = 1; it means a/an __________ process.

Reversible

Isothermal

None of these

Adiabatic

TRUE ANSWER : ?
YOUR ANSWER : ?

If atmospheric temperature and dew point are nearly equal, then the relative humidity is

50%

Almost 100%

Zero

Unpredictable

TRUE ANSWER : ?
YOUR ANSWER : ?