Tag: allotropes of carbon

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Questions Related to allotropes of carbon

Multiple choice chemistry the world of carbon organic compounds allotropes of carbon versatile nature of carbon

Two adjacent layers in graphite are bonded by comparatively _______ forces.

  1. strong

  2. weak

  3. both A and B

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Graphite is an allotrope of carbon. Each carbon is covalently bobded to other three carbon atoms, it contains layers of carbon. The layers slid over each other easily because of the weak Van der Walls' forces between them.

Multiple choice chemistry the world of carbon organic compounds allotropes of carbon versatile nature of carbon

Which of the following statement is true for graphite?


(a) In graphite, each carbon atom is bonded to four other carbon atoms.
(b) Graphite is very hard.
(c) It is a good conductor of electricity.
(d) It is bad conductor of electricity.

  1. a, b and d

  2. only c

  3. a and d

  4. a and c
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The  statement C is  true for graphite.
(a) In graphite, each carbon atom is bonded to three other carbon atoms.
(b) Graphite is soft.
(c) It is a good conductor of electricity as delocalised electrons are free to move in delocalised molecular orbitals.

Multiple choice chemistry the world of carbon organic compounds allotropes of carbon versatile nature of carbon

The allotrope of carbon which is a good conductor of heat and electricity is:

  1. diamond

  2. sugar charcoal

  3. graphite

  4. wood charcoal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Graphite is an allotrope of carbon other than diamond. 


It has planar structure in which three electrons are covalently bonded while the fourth electron is free to migrate in the layered structure and makes graphite electrically conductive.

Hence, option $C$ is correct.