CHEMICAL ENGINEERING | Fuels and Combustion

With increase in the oxygen content of the coal, its __________ decreases.

Byadmin August 17, 2022

Question: With increase in the oxygen content of the coal, its __________ decreases.
[A].

calorific value

[B].

caking power

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Reaction Engineering

A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3 . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m3 , the volume of the mixed flow reactor should be increased by a factor of

Question: A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3 . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m3 , the volume of the mixed flow reactor should be increased by a factor of
[A].

7
[B].
6
[C].
3
[D].
7/3

Answer: Option A

Explanation:

No answer description available for this question.

Read More A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3 . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m3 , the volume of the mixed flow reactor should be increased by a factor of
CHEMICAL ENGINEERING | Fluid Mechanics

Mass velocity is independent of temperature & pressure, when the flow is

Question: Mass velocity is independent of temperature & pressure, when the flow is
[A].

unsteady through unchanged cross-section.
[B].
steady through changing cross-section.
[C].
steady and the cross-section is unchanged.
[D].
unsteady and the cross-section is changed.

Answer: Option C

Explanation:

No answer description available for this question.

Read More Mass velocity is independent of temperature & pressure, when the flow is
Fuels and Combustion

Abel apparatus is used for those oils, whose flash points are ___________°F?

Abel apparatus is used for those oils, whose flash points are ___________°F?

A. < 120
B. > 120
C. > 280
D. 300-600

Read More Abel apparatus is used for those oils, whose flash points are ___________°F?
Fuels and Combustion

Coalification means the ___________________?

Coalification means the ___________________?

A. Process of conversion of lignite into anthracite
B. Underground gasification of coal
C. Complete combustion of coal
D. Direct hydrogenation of coal

Read More Coalification means the ___________________?
CHEMICAL ENGINEERING | Fluid Mechanics

Pascal’s law is valid, only when the fluid is

Question: Pascal’s law is valid, only when the fluid is
[A].

frictionless and at rest.
[B].
at rest.
[C].
at rest and when the frictionless fluid is in motion.
[D].
none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Read More Pascal’s law is valid, only when the fluid is
CHEMICAL ENGINEERING | Fuels and Combustion

Abrasion index of blast furnace coke should be around __________ percent.

Question: Abrasion index of blast furnace coke should be around __________ percent.
[A].

20
[B].
35
[C].
55
[D].
80

Answer: Option D

Explanation:

No answer description available for this question.

Read More Abrasion index of blast furnace coke should be around __________ percent.

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