Chemical Engineering Basics MCQs

Question 1

In the floatation process, pine oil is used as the

Accepted Answer

Frother

Answer

Collector

Answer

Activator

Answer

Depressant

Question 2

Normalising does not __________ of a metal.

Accepted Answer

Remove internal stresses

Answer

Improve machinability & tensile strength

Answer

Refine the structure

Answer

Remove strains caused by cold working

Question 3

Normalising does not __________ of a metal.

Accepted Answer

Remove internal stresses

Answer

Improve machinability & tensile strength

Answer

Refine the structure

Answer

Remove strains caused by cold working

Question 4

Calorific value of __________ are almost same.

Accepted Answer

Petrol & diesel

Answer

Lignite & anthracite coal

Answer

Lignite & coal gas

Answer

Coal gas & natural gas

Question 5

Closeness of packing is maximum in case of __________ crystal lattice.

Accepted Answer

Face centred

Answer

Simple cubic

Answer

Body centred

Answer

None of these

Question 6

Absorptivity of a grey body varies with the

Accepted Answer

Neither A nor B

Answer

Wavelength of the incident ray

Answer

Temperature

Answer

Both A & B

Question 7

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the

Accepted Answer

Load to produce unit deflection

Answer

Ability to absorb shock

Answer

Capacity to store energy

Answer

Ratio of the wire & coil diameters

Question 8

Which of the following does not come under the category of electrochemical corrosion?

Accepted Answer

Corrosion in organic liquids

Answer

Atmospheric corrosion in moist gas or air

Answer

Soil corrosion as in the case of underground pipes

Answer

Corrosion in sea water and molten metals

Question 9

Starting friction is low in case of the __________ lubrication.

Accepted Answer

Hydrostatic

Answer

Boundary

Answer

Hydrodynamic

Answer

Mixed/semi-fluid