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Chemical Engineering Basics

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

None of these
Fuel injection
Hot compressed air
Spark

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Chemical Engineering Basics
The velocity of sound in air is independent of changes in its

Humidity
Pressure
None of these
Temperature

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Chemical Engineering Basics
Brinell Hardness Number (BHN) for talc is approximately in the range of

20-30
1-5
100-150
200-250

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Chemical Engineering Basics
Out of the following, the dimensionless quantity is

Specific weight
Mach number
Viscosity
Density

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

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

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Chemical Engineering Basics
Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

Its efficiency will not be affected
It will not develop sufficient head to raise water
It will deliver low discharge of liquid
It will be cavitated

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