Materials of Construction Mcqs

This set of Engineering Multiple Choice Questions & Answers (MCQs) focuses on “ Materials of Construction ”. These Mcqs are chosen from a collection of most authoritative and best reference books on Chemical Engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Materials of Construction comprehensively.

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1.
Austenitic stainless steel is characterized by

A body-centred cubic crystal structure

A face-centred cubic crystal structure

A simple hexagonal crystal structure

None of the above

2.
Ferritic stainless steel is characterized by

A simple hexagonal crystal structure

A body-centred cubic crystal structure

A face-centred cubic crystal structure

None of the above

4.
An increase in the carbon content of a steel

Increases its strength

Decreases its strength

Increases its ductility

None of the above

5.
An increase in the carbide/graphite ratio in cast iron tends to

Increase the hardness

Increase the brittleness

Decrease the ductility

All of the above

6.
Cementite

Is a compound of iron and carbon

Is characterized by an orthorhombic crystal structure

Has the approximate chemical formula Fe3C

All of these answers

7.
In martensitic stainless steel the difference between the chromium percentage and seventeen times the carbon content is

Less than 12.5%

Greater than 12.5 %

Greater than 24%

Less than 18%

8.
In ferritic stainless steel the difference between the chromium percentage and seventeen times the carbon content is

Less than 24%

Greater than 24 %

Greater than 12.5%

Less than 12.5%

10.
The percentage of carbon is the least in

White cast iron

Grey cast iron

Wrought iron

Stainless steel

11.
The presence of impurities in iron

Lowers the melting point

Raises the melting point

Has no effect on melting point

Makes iron malleable

12.
An alloy is

An intermetallic compound

A solid substance containing two or more metallic elements

A metallic material containing at least one metallic element

A metallic material containing at least one non-matallic element

13.
Metalloid is

An alloy

An element which exhibits properties of metal and non-metal both

Highly electronegative

Highly electropositive

14.
A substance is said to be malleable if it

Does not react with acids and alkalies

Can be hammered to thin sheets

Has a very high melting point

Has a metallic lustre

15.
The property of metals olloys which describes its ability to be drawn into wires is known as

Tenacity

Dustility

Porosity

Malleability

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