At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Byadmin August 25, 2022

Question: At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.
[A].

is greater than

[B].

is lower than

[C].

is same as

[D].

cannot be predicted as data are insufficient

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Heat Transfer

For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is

Question: For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is
[A].

1.26 h1
[B].
0.794 h1
[C].
0.574 h1
[D].
1.741 h1

Answer: Option B

Explanation:

No answer description available for this question.

Read More For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is
CHEMICAL ENGINEERING | Chemical Engineering Basics

In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).

Question: In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).
[A].

mechanical
[B].
overall
[C].
volumetric
[D].
impeller

Answer: Option A

Explanation:

No answer description available for this question.

Read More In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).
CHEMICAL ENGINEERING | Chemical Reaction Engineering

During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an en-dothermic reaction. The yield of SO3 will be maximised, if the

Question: During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an en-dothermic reaction. The yield of SO3 will be maximised, if the
[A].

temperature is increased.
[B].
pressure is reduced.
[C].
temperature is increased and pressure is reduced.
[D].
temperature is reduced and pressure is increased.

Answer: Option D

Explanation:

No answer description available for this question.

Read More During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an en-dothermic reaction. The yield of SO3 will be maximised, if the
Mass Transfer

At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes_____________________?

At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes_____________________?

A. 1
B. 0
C. ∞
D. None of these

Read More At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes_____________________?
CHEMICAL ENGINEERING | Fuels and Combustion

Blast furnace gas constitutes mainly of

Question: Blast furnace gas constitutes mainly of
[A].

N2 & CH4
[B].
N2 & H2
[C].
N2 & CO
[D].
CH4 & CO2

Answer: Option C

Explanation:

No answer description available for this question.

Read More Blast furnace gas constitutes mainly of
CHEMICAL ENGINEERING | Fuels and Combustion

Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because

Question: Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because
[A].

the hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot.
[B].
it reduces its calorific value tremendously.
[C].
it reduces its flame temperature tremendously.
[D].
there are chances of explosion during preheating.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because

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