CHEMICAL ENGINEERING | Fuels and Combustion

Bulk density of pulverised coal may be about __________ kg/m3.

Byadmin August 19, 2022

Question: Bulk density of pulverised coal may be about __________ kg/m3.
[A].

100

[B].

500

[C].

1000

[D].

1500

Answer: Option B

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Basics

Annealing ofwhite cast iron produces __________ iron.

Question: Annealing ofwhite cast iron produces __________ iron.
[A].

grey
[B].
nodular
[C].
malleable
[D].
spheroidal

Answer: Option C

Explanation:

No answer description available for this question.

Read More Annealing ofwhite cast iron produces __________ iron.
CHEMICAL ENGINEERING | Fuels and Combustion

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3 ), while the C.V. is same on weight basis (i.e., kcal/kg) ?

Question: For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3 ), while the C.V. is same on weight basis (i.e., kcal/kg) ?
[A].

Propane and acetylene
[B].
Propane and LPG
[C].
Sewage gas and gobar gas
[D].
B.F. gas and coke oven gas

Answer: Option A

Explanation:

No answer description available for this question.

Read More For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3 ), while the C.V. is same on weight basis (i.e., kcal/kg) ?
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
Fuels and Combustion

Higher fuel combustion efficiency cannot be achieved by_________________?

Higher fuel combustion efficiency cannot be achieved by_________________?

A. Preheating of fuel gases & combustion air
B. Reducing sulphur content in the fuel
C. Adopting proper fuel firing technique & fuel preparation
D. Supplying correct amount of combustion air

Read More Higher fuel combustion efficiency cannot be achieved by_________________?
CHEMICAL ENGINEERING | Fluid Mechanics

In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.

Question: In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
[A].

directly proportional to
[B].
inversely proportional to
[C].
inversely proportional to the square root of
[D].
independent of

Answer: Option B

Explanation:

No answer description available for this question.

Read More In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
CHEMICAL ENGINEERING | Chemical Reaction Engineering

Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.

Question: Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
[A].

proportional to
[B].
independent of
[C].
inversely proportional to
[D].
proportional to the square of

Answer: Option A

Explanation:

No answer description available for this question.

Read More Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.

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