Free Bachelor of Mechanical Engineering Materials Science Questions and Answers

Question 1

Which of the following attributes does metal have an advantage over ceramic in?

Accepted Answer

Ductility

Answer

Yield Strength

Answer

Toughness

Answer

Hardness

Question 2

Iron and carbon are the basic components of steels. Which of the aforementioned subgroups do they belong ?

Accepted Answer

Metallic Solid

Answer

Ceramics

Answer

Composites

Answer

Polymer

Question 3

A significant composite is GFRP. It represents

Accepted Answer

Glass Fibre Reinforced Polymer

Answer

Gelatin Fibre Reinforced Polymer

Answer

Graphite Fibre Reinforced Polymer

Answer

Germanium Fibre Reinforced Polymer

Question 4

A great refractory material is ceramic. A substance is referred to as refractory if it:

Accepted Answer

retains its strength at high temperatures

Answer

has high refractive index

Answer

resists the flow of electric current

Answer

all of the mentioned

Question 5

Which of the following is not a biomaterial?

Accepted Answer

None of the mentioned

Answer

Metals

Answer

Polymers

Answer

Ceramics

Question 6

What statement about polymers is accurate?

Accepted Answer

All of the mentioned

Answer

They do not have a linear stress-strain curve

Answer

They have high strength to mass ratio

Answer

They have very high molecular mass

Question 7

A given element's many isotopes all share the same:

Accepted Answer

Number of protons

Answer

Thermodynamic stability

Answer

Number of neutrons

Answer

Molar mass

Question 8

Argon has an isobar of calcium. They vary in:

Accepted Answer

Number of neutrons

Answer

Number of nucleons

Answer

Atomic weight

Answer

None of the mentioned

Question 9

The following terms describe species that have various numbers of protons but the same number of neutrons:

Accepted Answer

Isotones

Answer

Isotopes

Answer

Isobars

Answer

Isomers

Question 10

A species' atomic number is the sum of its:

Accepted Answer

Protons

Answer

Nucleons

Answer

Valence electrons

Answer

Neutrons