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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following materials has the maximum shrinkage allowance ?

Aluminium alloy
Lead
Brass
Cast iron

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Chemical Engineering Basics
Copper is not present as an alloying constituent in

Delta metal
Nichrome
Constantan
Silicon bronze

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

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

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Chemical Engineering Basics
Milligram of KOH required to saponify 1 gm of oil is called its __________ number.

Emulsion
Precipitation
Saponification
Acid

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Chemical Engineering Basics
A compact estimate about the amount of materials handling between various work stations is obtained from the

Travel chart
String diagram
Bin chart
Gantt chart

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Chemical Engineering Basics
In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :

Mixture of water and air
Blast of air
Rain of molten lead
Jet of water at high pressure

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