Which is the most matured coal ?
Which is the most matured coal ?
A. Lignite
B. Bituminous
C. Semi-anthracite
D. Anthracite
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The maximum adiabatic flame temperature in air is _____________ the maximum flame temperature in pure oxygen?
The maximum adiabatic flame temperature in air is _____________ the maximum flame temperature in pure oxygen?A. Lower than
B. Higher than
C. Same as
D. Not related toCoal is heated in absence of air for 7 minutes at a temperature of about ______________ °C, during its volatile matter determination for proximate analysis?
Coal is heated in absence of air for 7 minutes at a temperature of about ______________ °C, during its volatile matter determination for proximate analysis?A. 550
B. 750
C. 950
D. 1150Correct 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.
Blast furnace gas is a very poisonous gas because of its predominantly high _______________ content?
Blast furnace gas is a very poisonous gas because of its predominantly high _______________ content?A. H2O
B. CO2
C. CO
D. CH4Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if __________________?
Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if __________________?A. It contains large amount of volatile matter
B. It is stored in tall heaps
C. Smaller fines are stored in large quantity
D. All A., B. and C.Supply of excess air for complete combustion of fuel is necessitated to facilitate___________________?
Supply of excess air for complete combustion of fuel is necessitated to facilitate___________________?A. Its thorough mixing with air
B. Attainment of chemical equilibrium
C. Attainment of high temperature
D. None of these