CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

Duringthe phase transition, __________ changes.

Volume

Pressure

All of these

Temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Entropy change in case of reversible adiabatic process is

Maximum

Minimum

Indeterminate

Zero

TRUE ANSWER : ?
YOUR ANSWER : ?

In the ammonia synthesis reaction, N₂ + 3H₂ ⇋ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

High temperature

Both low temperature and high pressure

Low pressure

Low temperature only

TRUE ANSWER : ?
YOUR ANSWER : ?

Ideal gas law is applicable at

High T, low P

High T, high P

Low T, low P

Low T, high P

TRUE ANSWER : ?
YOUR ANSWER : ?

Co-efficient of Performance (COP) of a refrigerator is the ratio of the

Refrigeration obtained to the work required

Lower to higher temperature

Work required to refrigeration obtained

Higher to lower temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzman's constant, T = absolute temperature)

√(3KT/m)

√(2KT/m)

3KT/m

√(6KT/m)

TRUE ANSWER : ?
YOUR ANSWER : ?

In an ideal solution, the activity of a component equals its

Fugacity at the same temperature and pressure

Partial pressure

Mole fraction

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

At a given temperature, the volume of a gas dissolved in a solvent __________ with increase in pressure.

Decreases

May increase or decrease; depends on the gas

Increases

Remains unchanged

TRUE ANSWER : ?
YOUR ANSWER : ?

Entropy of the system decreases, when

Both B & C

A gas expands spontaneously from high pressure to low pressure

Water is converted into ice

Snow melts into water

TRUE ANSWER : ?
YOUR ANSWER : ?

Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

Same COP

Increased COP

Decreased COP

Increased or decreased COP ; depending upon the type of refrigerant

TRUE ANSWER : ?
YOUR ANSWER : ?

↑