The heat of combustion of a fuel___________________?

Byadmin March 8, 2019August 26, 2021

The heat of combustion of a fuel___________________?

A. Is equal to the heat of formation
B. Is always negative
C. Can’t be known without calculating it
D. Is always positive

Fuels and Combustion

Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?

Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?

A. Ash disposal problem
B. Excessive fly-ash discharge from the stack
C. High power consumption in its transportation
D. Erosion of induced draft fan blades

Read More Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?
CHEMICAL ENGINEERING | Fuels and Combustion

The advantage of firing pulverised coal in the furnace lies in the fact, that it

Question: The advantage of firing pulverised coal in the furnace lies in the fact, that it
[A].

permits the use of high ash content coal.
[B].
permits the use of low fusion point ash coal.
[C].
accelerates the burning rate and economises on fuel combustion.
[D].
all (a), (b) and (c).

Answer: Option C

Explanation:

No answer description available for this question.

Read More The advantage of firing pulverised coal in the furnace lies in the fact, that it
Fuels and Combustion

Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the____________________?

Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the____________________?

A. Decolourisation of sugar
B. Solvent recovery from air and gases
C. Absorption of gases and vapor
D. Electrode manufacture

Read More Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the____________________?
CHEMICAL ENGINEERING | Fuels and Combustion

Gobar gas is produced by the __________ of ‘gobar’ (cow dung).

Question: Gobar gas is produced by the __________ of ‘gobar’ (cow dung).
[A].

hydrolysis
[B].
fermentation
[C].
oxidation
[D].
dehydration

Answer: Option B

Explanation:

No answer description available for this question.

Read More Gobar gas is produced by the __________ of ‘gobar’ (cow dung).
CHEMICAL ENGINEERING | Fuels and Combustion

Increase in ash content of blast furnace coke

Question: Increase in ash content of blast furnace coke
[A].

reduces its consumption in the furnace.
[B].
increases its consumption in the furnace.
[C].
does not affect its consumption in the furnace.
[D].
decreases its hardness and abrasion resistance.

Answer: Option B

Explanation:

No answer description available for this question.

Read More Increase in ash content of blast furnace coke
CHEMICAL ENGINEERING | Fuels and Combustion

As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion __________ for the same percentage of excess air.

Question: As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion __________ for the same percentage of excess air.
[A].

decreases
[B].
increases
[C].
remains same
[D].
may increase or decrease depending on the type of fuel

Answer: Option B

Explanation:

No answer description available for this question.

Read More As the C/H ratio of the fuel increases, the amount of CO2 formed on combustion __________ for the same percentage of excess air.

Similar Posts