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Chemical Engineering Basics

Chemical Engineering Basics
Presence of small quantity of sulphur in low carbon steel improves its

Weldability
Machinability
Hardenarality
Formability

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

Viscosity
Thermal diffusivity
Density
Thermal conductivity

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Chemical Engineering Basics
In a casting, cold shut defect is caused by

Faulty gating system
Very low mould permeability
Melt-mould reactions
Low pounhg temperature

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Chemical Engineering Basics
Hydrogen in liquid steels is dissolved

In the ionic form
In the molecular form
In the atomic form
As tiny gas bubbles

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Chemical Engineering Basics
Toughness of a material is measured by the

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

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Chemical Engineering Basics
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about

0.37569444444444
1.2090277777778
0.70902777777778
0.95902777777778

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