Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal ?

Byadmin March 7, 2019August 26, 2021

Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal ?

A. Vitrain
B. Clarain
C. Durain
D. Fussain

Fuels and Combustion

Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has_________________?

Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has_________________?

A. Higher calorific value
B. Lower hydrogen content
C. Both A. and B.
D. Neither A. nor B.

Read More Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has_________________?
CHEMICAL ENGINEERING | Fuels and Combustion

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

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.

Read More Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.
CHEMICAL ENGINEERING | Fuels and Combustion

With increase in calorific value of fuels, their adiabatic flame temperatures

Question: With increase in calorific value of fuels, their adiabatic flame temperatures
[A].

increase
[B].
decrease
[C].
remain unchanged
[D].
may increase or decrease ; depends on the quantity of products of combustion

Answer: Option D

Explanation:

No answer description available for this question.

Read More With increase in calorific value of fuels, their adiabatic flame temperatures
CHEMICAL ENGINEERING | Fuels and Combustion

The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorifice value will be

Question: The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorifice value will be
[A].

y
[B].
0.95 y
[C].
1.05 y
[D].
1.8 y

Answer: Option A

Explanation:

No answer description available for this question.

Read More The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorifice value will be
CHEMICAL ENGINEERING | Fuels and Combustion

Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

Question: Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.
[A].

CO content
[B].
dew point
[C].
CO2 content
[D].
O2 content

Answer: Option A

Explanation:

No answer description available for this question.

Read More Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.
CHEMICAL ENGINEERING | Fuels and Combustion

Blast furnace gas constitutes mainly of

Question: Blast furnace gas constitutes mainly of
[A].

N2 & CH4
[B].
N2 & H2
[C].
N2 & CO
[D].
CH4 & CO2

Answer: Option C

Explanation:

No answer description available for this question.

Read More Blast furnace gas constitutes mainly of

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