CHEMICAL ENGINEERING | Mass Transfer

With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

Byadmin July 23, 2022July 24, 2022

Question: With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)
[A].

increases

[B].

decreases

[C].

remains unaffected

[D].

increases Linearly

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

In a working refrigerator, the value of COP is always

Question: In a working refrigerator, the value of COP is always
[A].

0
[B].
< 0
[C].
< 1
[D].
> 1

Answer: Option D

Explanation:

No answer description available for this question.

Read More In a working refrigerator, the value of COP is always
Mass Transfer

The relation, Sc = Pr = 1, is valid, when the mechanism of ______________ transfer is same?

The relation, Sc = Pr = 1, is valid, when the mechanism of ______________ transfer is same?

A. Heat and mass
B. Mass and momentum
C. Heat and momentum
D. Heat, momentum and mass

Read More The relation, Sc = Pr = 1, is valid, when the mechanism of ______________ transfer is same?
CHEMICAL ENGINEERING | Fuels and Combustion

In Lurgi coal gasifier,

Question: In Lurgi coal gasifier,
[A].

coking coals cannot be used.
[B].
low carbon conversion efficiency is achieved.
[C].
entrainment of solids is higher.
[D].
larger quantity of coal can be processed.

Answer: Option D

Explanation:

No answer description available for this question.

Read More In Lurgi coal gasifier,
CHEMICAL ENGINEERING | Heat Transfer

Peclet number (Pe) is given by

Question: Peclet number (Pe) is given by
[A].

Pe = Re.Pr
[B].
Pe = Re/Pr
[C].
Pe = Pr/Re
[D].
Pe = Nu.Re

Answer: Option A

Explanation:

No answer description available for this question.

Read More Peclet number (Pe) is given by
Mass Transfer

When the ____________________ the relative humidity of air decreases, despite an increase in the absolute humidity?

When the ____________________ the relative humidity of air decreases, despite an increase in the absolute humidity?

A. Temperature rises
B. Pressure rises
C. Temperature falls
D. Pressure falls

Read More When the ____________________ the relative humidity of air decreases, despite an increase in the absolute humidity?
CHEMICAL ENGINEERING | Chemical Engineering Plant Economics

Following the six-tenth factor rule, if a log-log plot of capacity of the equipment vs. cost of the equipment is made, then a straight line is obtained, whose slope is equal to

Question: Following the six-tenth factor rule, if a log-log plot of capacity of the equipment vs. cost of the equipment is made, then a straight line is obtained, whose slope is equal to
[A].

0.1
[B].
0.6
[C].
0.2
[D].
0.8

Answer: Option B

Explanation:

No answer description available for this question.

Read More Following the six-tenth factor rule, if a log-log plot of capacity of the equipment vs. cost of the equipment is made, then a straight line is obtained, whose slope is equal to

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