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Chemical Engineering Basics

Chemical Engineering Basics
The predominant mode of heat transfer which takes place from boiler furnace to water walls of a boiler is

Convection
Radiation
Both A & B
Conduction

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Chemical Engineering Basics
Boiler draught of 10 mm water column is equivalent to

10 kgf/m²
1 kgf/mm²
10 kgf/mm²
1 kgf/m²

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Chemical Engineering Basics
The phenomenon of strain-ageing is generally experienced with

Cast iron
High carbon steel
High manganese steel
Low carbon steel

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Chemical Engineering Basics
The property of material, by which a given amount of energy is absorbed by it, without plastic deformation is called

Resilience
Impact strength
Toughness
Ductility

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Chemical Engineering Basics
Lime contains about 90% CaO. Percentage CaO present in limestone is about

80
70
25
50

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Chemical Engineering Basics
Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

Re0.8, Re-0.5
Re0.8, Re0.5
Re0.5, Re0.8
Re-0.8, Re0.5

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