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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following metals reacts violently with water ?

Sodium
Magnesium
Calcium
Mercury

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Chemical Engineering Basics
Steel produced from phosphatic iron is __________ in nature.

Brittle
Malleable
Ductile
Tough

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Chemical Engineering Basics
If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase.

Convection
Nucleate boiling
Radiation
Conduction

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Chemical Engineering Basics
Rain drops falling through atmospheric air attain limited terminal velocity, because of

Force of gravity
Upward thrust due to air
Surface tension effects of water
Viscous force exerted by air

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Chemical Engineering Basics
Oxygen cylinders used for autogenous (cutting/welding) purposes are

Made by sand casting
Welded steel cylinders
Seamless & made of steel
Heat treated before use

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Chemical Engineering Basics
Castability of aluminium is increased by the addition of __________ in it.

Silicon
Lead
Manganese
Bismuth

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