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Chemical Engineering Basics

Chemical Engineering Basics
On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is

Fatigue
Creep
Tensile strength
Toughness

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

1493
959
723
1147

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Chemical Engineering Basics
At the point of boundary layer separation in fluid flow, the

Shear stress is zero
Density variation is maximum
Velocity gradient is flat
Shear stress is maximum

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Chemical Engineering Basics
Creep consideration is the most important in case of the

Blades of gas turbines
Steam engine flywheel
Cast iron pipes
Cycle chains

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Chemical Engineering Basics
Which of the following materials has the maximum shrinkage allowance ?

Brass
Cast iron
Aluminium alloy
Lead

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Chemical Engineering Basics
Kinematic viscosity of water as compared to that of air is

Same
15% more
15% less
More

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