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Chemical Engineering Basics

Chemical Engineering Basics
A psychrometer does not measure the __________ temperature of moist air.

Dew point
Wet bulb
Dry bulb
None of these

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Chemical Engineering Basics
Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

It will not develop sufficient head to raise water
It will deliver low discharge of liquid
It will be cavitated
Its efficiency will not be affected

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Chemical Engineering Basics
The process of removal of scale formed during hot rolling of steel is termed as

Shot blasting
Pickling
Descaling
Skimming

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Chemical Engineering Basics
Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)₂ __________ with increasing temperature.

None of these
Shows inversion of solubility
Decreases
Increases

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Chemical Engineering Basics
Rain drops falling through atmospheric air attain limited terminal velocity, because of

Upward thrust due to air
Viscous force exerted by air
Force of gravity
Surface tension effects of water

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Chemical Engineering Basics
Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Pearlite
Austenite
Cementite
Martensite

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