CHEMICAL ENGINEERING | Fuels and Combustion

In Lurgi coal gasifier,

Byadmin August 17, 2022

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.

CHEMICAL ENGINEERING | Chemical Process

Pencillin is made employing __________ fermentation process.

Question: Pencillin is made employing __________ fermentation process.
[A].

continuous
[B].
aerobic batch
[C].
anaerobic batch
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More Pencillin is made employing __________ fermentation process.
CHEMICAL ENGINEERING | Chemical Reaction Engineering

If ‘n’ is the order of reaction, then unit of rate constant is

Question: If ‘n’ is the order of reaction, then unit of rate constant is
[A].

1/(time)(concentration)n – 1
[B].
(time)-1 (concentration)n – 1
[C].
(time)n – 1 (concentration)
[D].
none of these

Answer: Option A

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Fluid Mechanics

In the complete turbulence zone (in rough pipes), the

Question: In the complete turbulence zone (in rough pipes), the
[A].

rough and smooth pipes have the same friction factor.
[B].
laminar film covers the roughness projections.
[C].
friction factor depends upon NRe only.
[D].
friction factor is independent of the relative roughness.

Answer: Option D

Explanation:

No answer description available for this question.

Read More In the complete turbulence zone (in rough pipes), the
CHEMICAL ENGINEERING | Chemical Reaction Engineering

An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.

Question: An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.
[A].

increase
[B].
increase exponentially
[C].
decrease
[D].
remain unchanged

Answer: Option C

Explanation:

No answer description available for this question.

Read More An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.
Fuels and Combustion

Short/intense flame is produced during combustion of gaseous fuel by using________________?

Short/intense flame is produced during combustion of gaseous fuel by using________________?

A. High amount/current of combustion air
B. Low amount/current of combustion air
C. Preheated secondary air
D. Very little excess air

Read More Short/intense flame is produced during combustion of gaseous fuel by using________________?
CHEMICAL ENGINEERING | Fuels and Combustion

With increase in the temperature of carbonisation of coal

Question: With increase in the temperature of carbonisation of coal
[A].

hydrogen content of coke oven gas increases due to cracking of hydrocarbons.
[B].
methane content in the coke oven gas decreases and carbon monoxide content increases.
[C].
calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H2 content.
[D].
all (a), (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

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