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Chemical Engineering Basics

Chemical Engineering Basics
Toughness of a material is measured by the

Scratch test
Notched bar test
Universal testing machine
Vicker's hardness test

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Chemical Engineering Basics
__________ of air does not increase with increase in temperature.

Thermal diffusivity
Density
Thermal conductivity
Viscosity

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

Black
Yellow
Green
Silver grey

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Chemical Engineering Basics
__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

Bell and Spigot
Expansion
Flanged
Collar

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Chemical Engineering Basics
A suitable lubricant used for watches is

Hazel-nut oil
Palm oil
Grease
Metallic soap solution

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