Mass Transfer MCQ Questions & Answers | Chemical Engineering

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91.
Which is the controlling factor for a drum drier?

A. Diffusion

B. Heat transfer

C. Both A & B

D. Neither A nor B

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92.
Absorption factor is defined as (where, S₁ = slope of the operating line S₂ = slope of the equilibrium curve)

A. $$\frac{{{{\text{S}}_2}}}{{{{\text{S}}_1}}}$$

B. $$\frac{{{{\text{S}}_1}}}{{{{\text{S}}_2}}}$$

C. S₁ - S₂

D. S₁ × S₂

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93.
Minimum possible diameter of a packed coloumn is decided mainly by the

A. Flooding

B. Gas viscosity

C. Liquid density

D. Liquid hold up

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94.
In triangular co-ordinates, the ternery composition point falls __________ of the triangle.

A. In the corners

B. Inside

C. On the sides

D. None of these

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95.
The dew point of a saturated gas phase equals the __________ temperature.

A. Gas

B. Room

C. Wet bulb

D. None of these

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96.
Which of the following is an undesirable characteristic for the solvent used in gas absorption?

A. Low vapor pressure

B. Low viscosity

C. High gas solubility

D. None of these

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97.
(N_Sh/N_Re.N_Sc) is termed in mass transfer operation as the

A. Stanton number

B. Peclet number

C. Thermal diffusivity

D. Momentum diffusivity

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98.
The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if

A. N_Sc = 1

B. N_Sc = N_Pr = N_Le

C. N_Pr = N_Le

D. N_Sc = N_Le

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99.
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

A. Mass diffusivity to momentum diffusivity

B. Thermal diffusivity to mass diffusivity

C. Momentum diffusivity to thermal diffusivity

D. None of these

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100.
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

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Mass Transfer MCQ Questions & Answers | Chemical Engineering

91. Which is the controlling factor for a drum drier?

Answer & Solution

92. Absorption factor is defined as (where, S1 = slope of the operating line S2 = slope of the equilibrium curve)

Answer & Solution

93. Minimum possible diameter of a packed coloumn is decided mainly by the

Answer & Solution

94. In triangular co-ordinates, the ternery composition point falls __________ of the triangle.

Answer & Solution

95. The dew point of a saturated gas phase equals the __________ temperature.

Answer & Solution

96. Which of the following is an undesirable characteristic for the solvent used in gas absorption?

Answer & Solution

97. (NSh/NRe.NSc) is termed in mass transfer operation as the

Answer & Solution

98. The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if

Answer & Solution

99. Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

Answer & Solution

100. The McCabe Δ L law states that the

Answer & Solution

Read More Section(Mass Transfer)

91.
Which is the controlling factor for a drum drier?

92.
Absorption factor is defined as (where, S₁ = slope of the operating line S₂ = slope of the equilibrium curve)

93.
Minimum possible diameter of a packed coloumn is decided mainly by the

94.
In triangular co-ordinates, the ternery composition point falls __________ of the triangle.

95.
The dew point of a saturated gas phase equals the __________ temperature.

96.
Which of the following is an undesirable characteristic for the solvent used in gas absorption?

97.
(N_Sh/N_Re.N_Sc) is termed in mass transfer operation as the

98.
The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if

99.
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

100.
The McCabe Δ L law states that the