CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

In Joule-Thomson porous plug experiment, the

Entire apparatus is exposed to surroundings

Enthalpy does not remain constant

None of these

Temperature remains constant

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Mole fraction

Partial pressure

Fugacity at the same temperature and pressure

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches

Infinity

None of these

Unity

Zero

TRUE ANSWER : ?
YOUR ANSWER : ?

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure.

Partial pressure

A, B, and C

Activity co-efficient

Fugacity

TRUE ANSWER : ?
YOUR ANSWER : ?

Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is

Negative

Zero

Positive

Infinity

TRUE ANSWER : ?
YOUR ANSWER : ?

The extensive properties are

None of these

Free energy, entropy and enthalpy

Volume, mass and number of moles

Both A and B

TRUE ANSWER : ?
YOUR ANSWER : ?

Linde gas liquefaction process employs cooling

At constant pressure

By expansion in an engine

By throttling

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Claussius-Clayperon equation gives accurate result, when the

Vapour pressure is relatively low and the temperature does not vary over wide limits

Vapour obeys the ideal gas law and the latent heat of vaporisation is constant

Volume in the liquid state is negligible compared with that in the vapour state

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The specific heat of saturated water vapour at 100°C is

-ve

∞

+ve

TRUE ANSWER : ?
YOUR ANSWER : ?

The main feature of Carnot refrigeration cycle is that, it

Does not need the addition of external work for its functioning

Accomplishes the reverse effect of the heat engine

Transfers heat from high temperature to low temperature

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?