Carbon - Different Forms NDA Questions

NDA Chemistry

Carbon - Different Forms MCQ Questions


1.
Carbon has the atomic number 6. What is its electronic configuration?
A.
2, 8, 4
B.
2, 4
C.
2, 8, 6
D.
2, 6
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ANSWER :
B. 2, 4
2.
Why does carbon form covalent bonds instead of ionic bonds with other elements?
A.
Because it has very low electronegativity
B.
Because carbon atoms are radioactive
C.
Because carbon has only 2 electrons in its valence shell
D.
Because losing or gaining 4 electrons would require a very large amount of energy
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ANSWER :
D. Because losing or gaining 4 electrons would require a very large amount of energy
3.
The self-linking property of carbon atoms to form long chains, branched chains, or rings is known as:
A.
Isomerism
B.
Polymerisation
C.
Catenation
D.
Allotropy
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ANSWER :
C. Catenation
4.
Which property of carbon, along with catenation, is responsible for the very large number of carbon compounds known?
A.
Its radioactivity
B.
Its metallic nature
C.
Its low melting point
D.
Its tetravalency
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ANSWER :
D. Its tetravalency
5.
A single covalent bond is formed by the sharing of how many electrons between two atoms?
A.
One electron
B.
Four electrons
C.
Two electrons
D.
Three electrons
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ANSWER :
C. Two electrons
6.
Which of the following is NOT an allotrope of carbon?
A.
Quartz
B.
Fullerene
C.
Graphite
D.
Diamond
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ANSWER :
A. Quartz