Allotropes of Carbon
Trending Questions
Q. The reason for carbon to show allotropic forms is :
- Catenation
- pπ-pπ bond formation.
- σ-σ bond formation.
- (a) and (b) above.
Q. Which of the following pair consists of only network solid?
- CO2, Diamond
- CO, CO2
- Graphite, CO2
- Diamond, Graphite
Q. The reason for carbon to show allotropic forms is :
- Catenation
- pπ-pπ bond formation.
- σ-σ bond formation.
- (a) and (b) above.
Q. Graphite is soft solid lubricant extremely difficult to melt. The reason for this anomalous behavior is that graphite:
- has molecules of variable molecular masses like polymers
- has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interpolate bonds
- is a non-crystalline substance
- is an allotropic form of diamond
Q.
Which of the following noble gases finds use in cryogenics and very low-temperature refrigeration?
Helium
Neon
Argon
Krypton
Q. Which one of the following isotope of carbon is thermodynamically more stable ?
- Buckminsterfullerene
- Graphite
- Diamond
- None of the above
Q.
Which of the following is/are false about diamond?
It has a high melting point
Average value of C-C bond order is 2.
It is a good conductor of electricity
It is insoluble in solvents
Q. The correct statement(s) related to allotropes of carbon is/are
- Graphite is the most stable allotropes of carbon and having a two dimensional sheet like structure of hexagonal rings of carbon
- Diamond is the hardest allotrope of carbon and having a three dimensional network structure of carbon
- Fullerene (C60) is recently discovered non-crysralline allotrope of carbon having a football-like structure
- Vander Waal's force of attraction acts between the layer of graphite