Chemical Engineering Basics MCQs

Question 1

A coal with high __________ content will ignite most easily.

Accepted Answer

Volatile matter

Answer

Hydrogen

Answer

Oxygen

Answer

Fixed carbon

Question 2

The driving force for the sintering of a powder compact is

Accepted Answer

Surface energy

Answer

Strain energy

Answer

Volume energy

Answer

Stacking fault energy

Question 3

The moment of inertia of a body comes into play in __________ motion.

Accepted Answer

Rotational

Answer

Curvilinear

Answer

Linear

Answer

None of these

Question 4

Overheating of satellites during re-entry to earth is controlled by

Accepted Answer

Cooling by flow of air over the surface

Answer

Thick insulation

Answer

Ceramic lining

Answer

None of these

Question 5

Pick out the wrong statement.

Accepted Answer

Stress corrosion occurs due to the combined action of corrosive environment and the compressive stress

Answer

Erosion corrosion which is identified by surface grooves, occurs due to the combined action of corrosive environment and mechanical abrasion

Answer

Stainless steel is prone to stress corrosion in solution containing chloride ion

Answer

In case of stress corrosion, the direction of crack propagation is perpendicular to the applied tensile stress

Question 6

Ferromagnetic material owe their properties to __________ inner sub-shells.

Accepted Answer

Partially filled

Answer

Completely filled

Answer

Equally filled

Answer

Vacant

Question 7

Which of the following mainly decides the current to be employed is arc welding?

Accepted Answer

Electrode size

Answer

Plate thickness

Answer

Voltage across the arc

Answer

Welded portion length

Question 8

The delivery pressure of boiler feed water pump compared to the boiler steam pressure is

Accepted Answer

Slightly more

Answer

Same

Answer

Slightly less

Answer

Much more

Question 9

The radioactive isotope of hydrogen is

Accepted Answer

Tritium

Answer

Deuterium

Answer

Protium

Answer

None of these