Related Questions

Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
A 20
B 40
C 60
D 80
Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns.
A 1800
B 2200
C 2400
D 2700
Coke oven gas is a better fuel than blast furnace gas, because of its higher
A Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)
B Adiabatic flame temperature
C Heat release rate (thus requiring smaller combustion chamber)
D All of the above
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
A Increases the reducing potential of the gas
B Increases the flame temperature
C No significant change occurs
D Increases the hydrogen content in the metal
Operation of blast furnace stove is based on the principles of a __________ furnace.
A Regenerative
B Recuperative
C Both A and B
D Neither A nor B
Here are some words translated from an artificial language : 'Agnoscrenia' means poisonous Spider, 'Delanocrenia' means Poisonous Snake, 'Agnosdeery' means Brown Spider. Which of the following word could possible mean 'Black Widow Spider'?
A Agnosvitriblunin
B Delanoclostagnos
C Agnosdelano
D Delamuttiagnos
Blast furnace gas burns with a bluish flame, because of the presence of
A CO
B CH4
C CO2
D S
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
Blast furnace gas compared to coke oven gas has
A Lower ignition temperature
B Narrower limit of inflammability
C Higher calorific value
D Lower theoretical flame temperature
Coke oven gas compared to blast furnace gas is
A More explosive and inflammable
B Less poisonous
C Lighter
D All of the above

Next steps