CHEMICAL ENGINEERING BASICS QUIZ

Which of the following is an example of cathodic protection of metals against corrosion ?

Lead lined reactor

Painted steel

Galvanised iron

Case hardened steel

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Force of gravity

Viscous force exerted by air

Upward thrust due to air

Surface tension effects of water

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YOUR ANSWER : ?

Steel produced from phosphatic iron is __________ in nature.

Malleable

Ductile

Brittle

Tough

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YOUR ANSWER : ?

On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is

Toughness

Fatigue

Tensile strength

Creep

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YOUR ANSWER : ?

Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

Parallel flow with equal heat capacities

Parallel flow with unequal heat capacities

Counter flow with equal heat capacities

Counter flow with unequal heat capacities

TRUE ANSWER : ?
YOUR ANSWER : ?

Dies for wire drawing are generally made of

Carbides

High carbon steel

Mild steel

Stainless steel

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During sensible cooling of air, its wet bulb temperature

Decreases & the dew point increases

Decreases but dew point remains constant

Increases & the dew point decreases

Increases but dew point remains constant

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ of air does not increase with increase in temperature.

Density

Thermal conductivity

Thermal diffusivity

Viscosity

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YOUR ANSWER : ?

Lead is added to 60:40 brass primarily to improve

Corrosion resistance

Machinability

Fluidity

Strength

TRUE ANSWER : ?
YOUR ANSWER : ?

Tempering of a material does not improve its

Toughness

Softness

Internal stress level

Machinability

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YOUR ANSWER : ?

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