Corresponding to Prandtl number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Byadmin August 25, 2022

Question: Corresponding to Prandtl number in heat transfer, the dimensionless group in mass transfer is the __________ number.
[A].

Schmidt

[B].

Sherwood

[C].

Peclet

[D].

Stanton

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Process

Helium is produced on commercial scale from

Question: Helium is produced on commercial scale from
[A].

air
[B].
natural gas
[C].
coke oven gas
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More Helium is produced on commercial scale from
CHEMICAL ENGINEERING | Fuels and Combustion

In low temperature carbonisation (as compared to high temperature carbonisation) of coal

Question: In low temperature carbonisation (as compared to high temperature carbonisation) of coal
[A].

ammonia yield is more.
[B].
aliphatic tar is produced.
[C].
free carbon in tar is more.
[D].
all (a), (b) and (c).

Answer: Option B

Explanation:

No answer description available for this question.

Read More In low temperature carbonisation (as compared to high temperature carbonisation) of coal
CHEMICAL ENGINEERING | Chemical Process

Zeolite used in water softening process (cation exchange) is regenerated by washing with

Question: Zeolite used in water softening process (cation exchange) is regenerated by washing with
[A].

brine
[B].
chloramines
[C].
sodium bisulphite
[D].
liquid chlorines

Answer: Option A

Explanation:

No answer description available for this question.

Read More Zeolite used in water softening process (cation exchange) is regenerated by washing with
Mass Transfer

H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?

H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?

A. 2.0
B. 1.56
C. 1.0
D. 0.56

Read More H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?
CHEMICAL ENGINEERING | Furnace Technology

Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.

Question: Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.
[A].

< 2
[B].
< 5
[C].
< 8
[D].
< 10

Answer: Option A

Explanation:

No answer description available for this question.

Read More Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent.
CHEMICAL ENGINEERING | Chemical Process

Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils

Question: Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
[A].

cause cholesterol build up and blood clotting.
[B].
are prone to rancid oxidation.
[C].
always contain some amount of nickel (as their complete removal is very difficult).
[D].
have affinity to retain harmful sulphur compounds.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils

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