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Increase in ash content of blast furnace coke

CHEMICAL ENGINEERING, Fuels and Combustion /
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.

Increase in ash content of blast furnace coke Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

He believes in the policy of making hay while the sun shines.

Idioms And Phrases, Verbal Ability /
Question: He believes in the policy of making hay while the sun shines.
[A].

giving bribes to get his work done

[B].

seeking advice from one and all

[C].

helping those who help him

[D].

making the best use of a favourable situation

Answer: Option D

Explanation:

No answer description available for this question.

He believes in the policy of making hay while the sun shines. Read More »

Idioms And Phrases, Verbal Ability

A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon
[A].

is less liable to spontaneous combustion on storage.

[B].

is more difficult to ignite and produces a shorter flame.

[C].

requires smaller combustion space and less secondary air.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

Fusion point of coal ash increases with increase in its __________ content.

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: Fusion point of coal ash increases with increase in its __________ content.
[A].

iron sulphate

[B].

iron silicate

[C].

lime and magnesia

[D].

all (a), (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

Fusion point of coal ash increases with increase in its __________ content. Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

Low temperature oxidation of coal resulting from bad storage conditions does not decrease its

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: Low temperature oxidation of coal resulting from bad storage conditions does not decrease its
[A].

caking power

[B].

calorific value

[C].

hydrogen content

[D].

oxygen content

Answer: Option D

Explanation:

No answer description available for this question.

Low temperature oxidation of coal resulting from bad storage conditions does not decrease its Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

Out of the following fuels, the difference between the net and gross calorific value is maximum in case of

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: Out of the following fuels, the difference between the net and gross calorific value is maximum in case of
[A].

pitch

[B].

fuel oil

[C].

blast furnace gas

[D].

bituminous coal

Answer: Option B

Explanation:

No answer description available for this question.

Out of the following fuels, the difference between the net and gross calorific value is maximum in case of Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.
[A].

6

[B].

12

[C].

18

[D].

24

Answer: Option D

Explanation:

No answer description available for this question.

Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent. Read More »

CHEMICAL ENGINEERING, Fuels and Combustion

For every 10% increase in the excess air; the fuel consumption increases by __________ percent.

CHEMICAL ENGINEERING, Fuels and Combustion /
Question: For every 10% increase in the excess air; the fuel consumption increases by __________ percent.
[A].

0.1

[B].

2

[C].

5

[D].

10

Answer: Option A

Explanation:

No answer description available for this question.

For every 10% increase in the excess air; the fuel consumption increases by __________ percent. Read More »

CHEMICAL ENGINEERING, Fuels and Combustion