Chemical Engineering Basics MCQs

Question 1

Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates

Accepted Answer

Within the core

Answer

At the surface

Answer

Just below the surface

Answer

Anywhere on the surface

Question 2

The type of water filter normally employed/ preferred for treating small quantities of water in railway stations and individual industries is the __________ filter.

Accepted Answer

Pressure

Answer

Rapid sand

Answer

Gravity

Answer

Slow sand

Question 3

A simple closed grinding circuit may consist of

Accepted Answer

A ball mill and a classifier

Answer

A rod mill and a hydrocyclone

Answer

A jaw crusher and a hydrocyclone

Answer

A ball mill and a froth floatation cell

Question 4

Which of the following is categorised as the plastic welding?

Accepted Answer

Forge welding

Answer

Gas welding

Answer

Electric arc welding

Answer

None of these

Question 5

Ferrites are __________ magnetic.

Accepted Answer

Ferri

Answer

Anti

Answer

Para

Answer

Ferro

Question 6

The most prominent single cause of corrosion in boilertubes, drums, economisers and steam superheaters in a thermal power plant boiler is the

Accepted Answer

Release of non-condensable gas from water in the boiler

Answer

Water alkalinity & leakage

Answer

Hydrazine addition during feed water treatment

Answer

Scale formation

Question 7

Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?

Accepted Answer

Both A & B

Answer

Nitrogen oxides

Answer

Hydrocarbons

Answer

Carbon monoxide

Question 8

Yield strength of a material is determined by the __________ test.

Accepted Answer

Tension

Answer

Creep

Answer

Compression

Answer

Endurance

Question 9

Work done by a/an __________ process is determined by ∫p.dV.

Accepted Answer

Quasi-static

Answer

Adiabatic

Answer

Isothermal

Answer

Isentropic