CHEMICAL ENGINEERING | Environmental Engineering

Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million).

Byadmin August 12, 2022

Question: Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million).
[A].

[B].

1000

[C].

2000

[D].

5000

Answer: Option D

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Fluid Mechanics

Drag co-officient CD, in Stoke’s law range is given by

Question: Drag co-officient CD, in Stoke’s law range is given by
[A].

[B].

[C].

[D].

Answer: Option B

Explanation:

No answer description available for this question.

Read More Drag co-officient CD, in Stoke’s law range is given by
CHEMICAL ENGINEERING | Fuels and Combustion

Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.

Question: Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.
[A].

5
[B].
10
[C].
20
[D].
35

Answer: Option C

Explanation:

No answer description available for this question.

Read More Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.
CHEMICAL ENGINEERING | Mass Transfer

Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.

Question: Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.
[A].

chemical properties
[B].
physical properties
[C].
degree of turbulence
[D].
interfacial area

Answer: Option A

Explanation:

No answer description available for this question.

Read More Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.
CHEMICAL ENGINEERING | Fuels and Combustion

A coal with high __________ content, would ignite most easily.

Question: A coal with high __________ content, would ignite most easily.
[A].

fixed carbon
[B].
volatile matter
[C].
ash
[D].
oxygen

Answer: Option B

Explanation:

No answer description available for this question.

Read More A coal with high __________ content, would ignite most easily.
CHEMICAL ENGINEERING | Fuels and Combustion

Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.

Question: Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.
[A].

70
[B].
85
[C].
105
[D].
145

Answer: Option C

Explanation:

No answer description available for this question.

Read More Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.
CHEMICAL ENGINEERING | Chemical Engineering Basics

The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.

Question: The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.
[A].

evaporative capacity
[B].
evaporation efficiency
[C].
thermal efficiency
[D].
steam load

Answer: Option A

Explanation:

No answer description available for this question.

Read More The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the __________ of a boiler.

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