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Chemical Engineering Basics

Chemical Engineering Basics
Cold chiesel & hammers are made of

Mild steel
Forged steel
High speed steel
High carbon steel

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Chemical Engineering Basics
The process of removal of scale formed during hot rolling of steel is termed as

Skimming
Descaling
Shot blasting
Pickling

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Chemical Engineering Basics
Powder metallurgy process does not make metal powder by

Atomisation
Grinding/milling
Electrolytic deposition
Hammering

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Chemical Engineering Basics
Which of the following metals is the most prone to work hardening?

Copper
Lead
Brass
Aluminium

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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

90000 J
240000 J
30000 J
60000 J

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Chemical Engineering Basics
Frost formation on the evaporator tubes in the domestic refrigerators

Is immaterial
Causes heat loss due to poor heat transfer
Decreased compressor power
Can be prevented by proper design

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