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Chemical Engineering Basics

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

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

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Chemical Engineering Basics
Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Diameter of the pipe
Velocity of the fluid
Length of the pipe
Density of the fluid

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Chemical Engineering Basics
Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

Green
Silver grey
Yellow
Black

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Chemical Engineering Basics
Sub zero treatment of steel is done to

Reduce the retained austenite in hardened steel
Suppress martensite transformation
Enhance its working performance in sub zero atmosphere
Induce temper brittleness after its hardening

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Chemical Engineering Basics
Oxygen cylinders used for autogenous (cutting/welding) purposes are

Welded steel cylinders
Seamless & made of steel
Made by sand casting
Heat treated before use

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Chemical Engineering Basics
Speed of a submarine in deep sea & that of an aeroplane is measured by a/an

Hot wire anemometer
Rotameter
Pitot tube
Stroboscope

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