Coking coals are invariably____________________?
Coking coals are invariably____________________?
A. Lignites
B. Bituminous coals
C. Semi-anthracites
D. Anthracites
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Anthracite coal
Question: Anthracite coal
[A].contains more volatile matter than bituminous coal. [B].
ignites more easily than bituminous coal. [C].
is essentially a coking coal. [D].
burns with short, bluish, yellow-tipped flame producing very little smoke. Answer: Option D
Explanation:
No answer description available for this question.
Efficiency of the combustion of a fuel is judged by the ______________ the flue gas?
Efficiency of the combustion of a fuel is judged by the ______________ the flue gas?A. % of CO2 in
B. % of O2in
C. Temperature of
D. Colour ofIf the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be_____________?
If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be_____________?A. Low
B. High
C. Very high, if the fuel is of low calorific value
D. None of theseBomb calorimeter is used to determine the (where, GCV – Gross Calorific Value. NCV – Net Calorific Value.)
Question: Bomb calorimeter is used to determine the (where, GCV – Gross Calorific Value. NCV – Net Calorific Value.)
[A].GCV at constant pressure. [B].
GCV at constant volume. [C].
NCV at constant pressure. [D].
NCV at constant volume. Answer: Option B
Explanation:
No answer description available for this question.
In flue gas analysis by Orsat’s apparatus, carbon monoxide is absorbed by
Question: In flue gas analysis by Orsat’s apparatus, carbon monoxide is absorbed by
[A].cuprous chloride [B].
potassium hydroxide [C].
alkaline pyrogallol solution [D].
none of these. Answer: Option A
Explanation:
No answer description available for this question.
Width of the coke oven towards coke side is slightly more than that on pusher side to____________________?
Width of the coke oven towards coke side is slightly more than that on pusher side to____________________?A. Facilitate easy discharging of coke as it swells during carbonisation
B. Facilitate uniform heating of the oven
C. Increase the output of the coke
D. None of these