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Chemical Engineering Basics

Chemical Engineering Basics
Blast furnace slag is mainly molten

Magnesium silicate
Iron pyrite
Calcium silicate
Sand

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Chemical Engineering Basics
Ignition of fuel in a diesel engine is by

Fuel injection
Spark
Hot compressed air
None of these

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Chemical Engineering Basics
Out of the following, which will fracture most readity, when hit with a hard hammer ?

Cast iron
Brass
Bronze
German silver

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Chemical Engineering Basics
In a casting, cold shut defect is caused by

Low pounhg temperature
Faulty gating system
Very low mould permeability
Melt-mould reactions

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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

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

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Chemical Engineering Basics
Which of the following will resist maxi-mum shock & vibration without cracking?

Malleable iron
Grey cast iron
White cast iron
Graphite

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