Fuels and Combustion

Tolerable concentration of toxic carbon monoxide in atmospheric air is about ______________ ppm?

Byadmin March 7, 2019August 26, 2021

Tolerable concentration of toxic carbon monoxide in atmospheric air is about ______________ ppm?

A. 50
B. 1000
C. 5000
D. 10000

Fuels and Combustion

Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of _____________ °C?

Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of _____________ °C?

A. 80-170
B. 200-300
C. 250-270
D. 280-300

Read More Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of _____________ °C?
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.
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?

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

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?
Fuels and Combustion

Fischer-Tropsch method aims at the ______________________?

Fischer-Tropsch method aims at the ______________________?

A. Gasification of coal
B. Synthesis of gasoline (from water gas)
C. Hydrogenation of coal to produce gasoline
D. None of these

Read More Fischer-Tropsch method aims at the ______________________?
CHEMICAL ENGINEERING | Fuels and Combustion

For maximum discharge through a chimney, its height should be

Question: For maximum discharge through a chimney, its height should be
[A].

200 meters.
[B].
infinitely long.
[C].
more than 105.7 metres.
[D].
equal to the height of the hot gas column producing draught.

Answer: Option D

Explanation:

No answer description available for this question.

Read More For maximum discharge through a chimney, its height should be
CHEMICAL ENGINEERING | Fuels and Combustion

A travelling grate stoker is meant for the efficient burning of __________ coal.

Question: A travelling grate stoker is meant for the efficient burning of __________ coal.
[A].

caking
[B].
pulverised
[C].
non-caking
[D].
high ash

Answer: Option C

Explanation:

No answer description available for this question.

Read More A travelling grate stoker is meant for the efficient burning of __________ coal.