Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?

In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

A

Total

B

Minimum

C

Operating

D

Maximum permissible

Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method

A

Is more accurate in finding the number of equilibrium stages

B

Accounts for the enthalpy changes in the process

C

Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method

D

All of the above

Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in

A

Air

B

Oxygen

C

Either A or B

D

Either A or C without gain or loss of heat

McCabe-Thiele method

A

Uses molal units for material and energy balance

B

Uses weight fractions to express liquid and vapour composition

C

Can use any type of units

D

Is more accurate than Ponchan-Savarit method

McCabe-Thiele method of binary distillation does not assume that the

A

Sensible heat changes are negligible compared with latent heat changes

B

Molar latent heats of all components are equal

C

Heat of mixing is negligible

D

None of these

In McCabe-Thiele method, at infinite reflux ratio

A

The overhead product is minimum

B

Both the operating lines coincide with diagonal

C

Both A & B

D

Neither A nor B

Norton's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.

A

True

B

False

Thevenin's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent current source in parallel with an equivalent impedance.

A

True

B

False

In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when

A

Saturated feed is not used

B

An azeotrope forms

C

The latent heat of vaporisation of the more and less volatile components are greatly different

D

A total condenser is used

The McCabe Δ L law states that the

A

Molar heats of vaporisation of components are nearly equal

B

Linear crystal growth rate depends on the degree of supersaturation

C

Linear crystal growth rate does not depend on the crystal size

D

Linear crystal growth rate depends on the crystal size

Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?

Related Questions