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Chemical Engineering Basics

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

Density
Thermal conductivity
Thermal diffusivity
Viscosity

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Chemical Engineering Basics
Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as

Gr0.25, Gr0.33
Gr0.33, Gr0.25
Gr0.25, Gr
Gr, Gr0.25

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Chemical Engineering Basics
Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Cementite
Pearlite
Austenite
Martensite

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Chemical Engineering Basics
Dies for wire drawing are generally made of

Carbides
Mild steel
Stainless steel
High carbon steel

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Chemical Engineering Basics
Load cells used for the measurement of weight has

Provision of thermal compensation and is hermetically sealed
All of these
Compact & rugged construction with an accuracy of 0.1 to 1%
No moving parts and incurs negligible deflection under load

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Chemical Engineering Basics
__________ is the most suitable lubricant for drawing mild steel wires?

Kerosene
Sodium stearate
Water
Lime water

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