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Chemical Engineering Basics

Chemical Engineering Basics
Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

Re0.5, Re0.8
Re0.8, Re0.5
Re0.8, Re-0.5
Re-0.8, Re0.5

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

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

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Chemical Engineering Basics
Which of the following is a boiler accessory i.e., not a boiler mounting ?

Stop valve
Feed water pump
Blow off cock
Feed check valve

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

Descaling
Pickling
Shot blasting
Skimming

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Chemical Engineering Basics
Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.

1493
723
959
1147

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Chemical Engineering Basics
Factor of safety is the ratio of the __________ stress to the working stress.

Yield
Tensile
Bearing
Compressive

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