Related Questions

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
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
A 20
B 40
C 60
D 80
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
India's latitudinal and longitudinal extent measured in degrees are almost the same, but its north-south extent measured in km is greater than its east-west extent. This is due to the fact that
A Longitudes are not parallel lines
B The distance between latitudes remains the same but the distance between longitudes is greatest at the Equator and nil at the poles where all longitudes join
C All longitudes with their opposites form great circles
D The earth is not a perfect sphere
Blast furnace produces following by reduction of iron ore
A Cast iron
B Pig iron
C Wrought iron
D Malleable iron
The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the
A Venturi atomiser
B Gravity settling chamber
C Electro-static precipitator
D Cyclone separator
Which is the most efficient dust removal equipment for removal of sub-micronic dust particles from blast furnace gas?
A Packed scrubber
B Gravity settling chamber
C Electrostatic precipitator
D Hydrocyclone
FeO, NO, P2O5 & Al2O3 হচ্ছে যথাক্রমে-
A ক্ষারকীয়, অম্লীয়, নিরপেক্ষ এবং উভধর্মী অক্সাইড
B উভধর্মীয়, অম্লীয়, ক্ষারকীয় এবং নিরপেক্ষ অক্সাইড
C অম্লীয়, নিরপেক্ষ উভধর্মী এবং ক্ষারকীয় অক্সাইড
D ক্ষারকীয় নিরপেক্ষ অম্লীয় এবং উভধর্মী অক্সাইড
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.
A Walking beam
B Shaft
C Tunnel
D Rotary hearth
Abrasion index of blast furnace coke should be around __________ percent.
A 20
B 35
C 80
D 55

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