Chemical Engineering Basics MCQs

Question 1

Primary designation of steel is based on its

Accepted Answer

Alloying elements content

Answer

Hardness & tensile strength

Answer

Carbon content

Answer

Iron content

Question 2

Dislocations are __________ defects.

Accepted Answer

Line

Answer

Point

Answer

Volume

Answer

None of these

Question 3

Which of the following are considered applications of ultrasonic testing ?

Accepted Answer

Detection of defects in metal

Answer

Determination of elastic constant

Answer

Measurement of material thickness

Answer

None of the above

Question 4

The most commonly used moderator in nuclear power plant is

Accepted Answer

Graphite

Answer

Light water

Answer

Heavy water

Answer

Berellium

Question 5

With increase in pressure, the saturation temperature of steam

Accepted Answer

Increases rapidly first and then slowly

Answer

Increases slowly first and then rapidly

Answer

First increases and then decreases

Answer

None of these

Question 6

The preferred alloying element for low temperature applications of steel is

Accepted Answer

Ni

Answer

Cr

Answer

N

Answer

Mo

Question 7

Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.

Accepted Answer

Grey

Answer

Black

Answer

Opaque

Answer

White

Question 8

Percentage of gaunge is maximum in the ore of

Accepted Answer

Gold

Answer

Iron

Answer

Zinc

Answer

Copper

Question 9

Heat transfer by radiation from a hot body will be most rapid, if its surface is __________ because of its higher emissivity.

Accepted Answer

Black & rough

Answer

White & rough

Answer

White & polished

Answer

Black & polished