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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following heat treatment processes is usually applied to castings ?

Annealing
Normalising
Tempering
Carburising

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Chemical Engineering Basics
Lead is added to 60:40 brass primarily to improve

Fluidity
Machinability
Strength
Corrosion resistance

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Chemical Engineering Basics
What is the value of included angle of a triangular notch for maximum discharge ?

120°
30°
90°
60°

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Chemical Engineering Basics
1% concentration of water vapor in air is equivalent to __________ ppm (parts per million).

1000
100
10
10000

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Chemical Engineering Basics
Powder metallurgy is used to produce

Porosity free components
Components of such alloys whose constituents do not form alloys readily
Components of large size
High precision components with complex cavities and sharp features

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Chemical Engineering Basics
Unit of viscosity in CGS system is

Gm . cm² . sec⁻²
Gm . cm . sec⁻¹
Gm .cm⁻², sec⁻¹
Gm .cm⁻¹ sec⁻¹

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