Chemical Engineering Basics MCQs

Question 1

Steel produced from phosphatic iron is __________ in nature.

Accepted Answer

Brittle

Answer

Malleable

Answer

Ductile

Answer

Tough

Question 2

Swaging is a/an __________ operation.

Accepted Answer

Forging

Answer

Piercing

Answer

Extrusion

Answer

Drawing

Question 3

Thermal efficiency of an internal combustion engine is around __________ percent.

Accepted Answer

35

Answer

8

Answer

65

Answer

80

Question 4

Pick out the wrong statement

Accepted Answer

Mass production of seamless pipes are done by electrical resistance welding (ERW)

Answer

Processing of themosetting plastics is ideally done by injection moulding

Answer

Processing of thermoplastics is ideally done by compression moulding

Answer

Stretch forming is a process of cold drawing

Question 5

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Accepted Answer

Austenite

Answer

Cementite

Answer

Martensite

Answer

Pearlite

Question 6

The phenomenon of strain-ageing is generally experienced with

Accepted Answer

Low carbon steel

Answer

Cast iron

Answer

High manganese steel

Answer

High carbon steel

Question 7

A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

Accepted Answer

Rubber

Answer

Steel

Answer

Glass

Answer

Brass

Question 8

Which of the following phenomenon/ phenomena is/are diffusion controlled ?

Accepted Answer

Recrystallisation

Answer

Dislocation climb

Answer

Cross-slip

Answer

Twinning

Question 9

On increasing the yield strength of a steel from 450 to 650 MPa, its __________ will increase.

Accepted Answer

Modulus of toughness

Answer

Ultimate tensile strength (UTS)

Answer

Percent elongation

Answer

Modulus of resilience