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Chemical Engineering Basics

Chemical Engineering Basics
Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

3
1.5
7
5

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Chemical Engineering Basics
During sensible cooling of air, its wet bulb temperature

Increases but dew point remains constant
Decreases but dew point remains constant
Increases & the dew point decreases
Decreases & the dew point increases

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Chemical Engineering Basics
The most important material handling system in an integrated steel plant is the

Belt conveyor
Truck
Diesel locomotive
Overhead hoists & cranes

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Chemical Engineering Basics
Out of the following, which will fracture most readity, when hit with a hard hammer ?

Brass
Bronze
German silver
Cast iron

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

80
25
50
70

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Chemical Engineering Basics
Cold cracking in the heat affected zone of a high strength steel weld can take place because of the

Relatively high sulphur content in the base metal
Martensite formation
Retained austenite
Sufficient hydrogen present in the welding arc

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