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Chemical Engineering Basics

Chemical Engineering Basics
Chlorine acts as a bleaching agent only in the presence of

Moisture
Pure oxygen
Dry air
Sunlight

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Chemical Engineering Basics
A cylinderical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson's ratio of the rod is

0.33
0.25
0.44

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

959
1147
723
1493

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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

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

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Chemical Engineering Basics
For the irreversible reaction, Ca+ 2C = Ca C₂ , Δ H°298 = - 60000 J . mole⁻¹ . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

60000 J
30000 J
240000 J
90000 J

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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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