Engineering Questions with Answers - Multiple Choice Questions
Materials Science MCQ’s – Carbon
1 - Question
Carbon is a ceramic.
a) True
b) False
View Answer
Explanation: The above statement is false. Carbon is not a ceramic material. An allotropic form of carbon called diamond can be considered as a ceramic.
2 - Question
What kind of bonds are present in diamond?
a) Covalent bond only
b) Ionic bond only
c) Mix of covalent and ionic bond
d) Metallic bonds
View Answer
Explanation: Diamonds have only carbon-carbon bonds which are covalent in nature.
3 - Question
Which of the following materials can be used as a substitute ceramic?
a) Diamond
b) Brass
c) Bismuth
d) Lead
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Explanation: Diamond has properties resembling that of ceramics and hence can be used as a substitute ceramic. All the other options are metals and hence they can never be used as a ceramic.
4 - Question
What is a difference between carbon and ceramic?
a) Both are hard
b) Both are non metallic
c) Both have covalent bonds
d) Both have very high thermal conductivity
View Answer
Explanation: Diamond has a very high thermal conductivity and doesn’t melt even at high temperature whereas ceramics do not have a high thermal conductivity.
5 - Question
Which of the following processes I not needed for making a synthetic diamond?
a) Application of high temperature
b) Application of high pressure
c) Chemical vapor deposition
d) Distillation
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Explanation: To make a synthetic diamonds, application of high temperature and pressure is used. Chemical vapor deposition can also be used to make synthetic diamonds.
6 - Question
Which of the following can be used for lubrication?
a) Graphite
b) Diamond
c) Brass
d) Bronze
View Answer
Explanation: Graphite due to its weak Vander Waals bonding between layers can be used as a lubricating agent.
7 - Question
Graphite is a good conductor of electricity.
a) True
b) False
View Answer
Explanation: The above statement is true. Graphite is indeed a good conductor of electricity and it is chemically stable at even high temperatures.
8 - Question
The chemical composition of Buckminster Fullerene?
a) C60
b) C50
c) C55
d) C45
View Answer
Explanation: The chemical composition of Buckminster Fullerene is C60. It is an allotropic form of carbon also called as Bucky-ball.