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Chemical Engineering Basics

Chemical Engineering Basics
The ratio of coil diameter to wire diameter of a spring is called the spring

None of these
Deflection
Form co-efficient
Index

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Chemical Engineering Basics
A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than __________ percent.

400
150
300
200

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Chemical Engineering Basics
Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.

Endurance
Tensile
Fatigue
Creep

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Chemical Engineering Basics
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is

5CaO . 3 Al2O₃
3CaO . Al2O₃
2CaO . SiO₂
3CaO . SiO₂

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Chemical Engineering Basics
In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :

Rain of molten lead
Blast of air
Jet of water at high pressure
Mixture of water and air

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Chemical Engineering Basics
A compact estimate about the amount of materials handling between various work stations is obtained from the

Gantt chart
String diagram
Bin chart
Travel chart

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