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Chemical Engineering Basics

Chemical Engineering Basics
The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

55
75
35
25

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Chemical Engineering Basics
Free oxygen is removed from boiler feed water, because it

None of these
Reduces heat transfer co-efficient
Is corrosive
Causes explosion

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Chemical Engineering Basics
The ratio of thermal & electrical conductivity is same for all the metals at the same temperature ; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

T²
1/T
T
1/T²

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Chemical Engineering Basics
The basic function of the drum in a boiler is to

Act as a storage for feed water
Remove settling impurities from steam
Separate steam from water
Act as a storage for steam

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Chemical Engineering Basics
Coke is added in the blast furnace to

None of these
Remove sulphur & phosphorus from molten metal
Reduce & melt the iron ore
Increase the fluidity of slag

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Chemical Engineering Basics
Lime contains about 90% CaO. Percentage CaO present in limestone is about

50
25
80
70

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