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Which of the following facts is/are correct about the blast furnace in Iron metallurgy? Limestone is added to the blast furnace to reduce the iron oxide in the ore to iron. Coke is added to the blast furnace to physically separate iron from other impurities. Carbon dioxide reduces to carbon monoxide.
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
In the blast furnace, as the oxygen percentage in air blast increases, the
P. flame temperature increases
Q. blast volume increases
R. blast volume decreases
S. flame temperature decreases
Grey pig is produced when the blast furnace is not provided with sufficient fuel while the white pig is produced when the blast furnace is provided sufficiently with fuel.
Temperature of blast furnace gas emanating from blast furnace is about . . . . . . . . degree C
Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent.
Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves?
Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves?
A manufacturer sells cooking gas stoves to shopkeepers at 10% profit, and in turn, they sell the cooking gas stoves to the customer to earn a 15% profit. If a customer gets a cooking gas stove for Rs. 7,590, then what is the manufacturing cost?
In each of the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All Pan are Stoves. II. No stove is Hook. III. Some Lamps are Pan. Conclusions: I. Some Pan are Hooks. II. Some Stoves are Pan. III. All Hooks are Lamps. IV. Some Lamps are Hooks is a possibility.