Question

The property of Carbon to form long chains or rings are -

• A. Catenation
• B. Polymerisation
• C. Cracking
• D. Hydrogenation

Answer 1

The correct option is A

Catenation

The explanation for the correct option:

A: Catenation

1. Catenation: Carbon has a unique property of self-linking called catenation, in which it can form numerous types of molecules by Carbon-Carbon bonding.
2. This will give rise to a large number of molecules.
3. For the formation of longer chain compounds Carbon forms covalent bonds.
4. The element showing catenation are Carbon, Boron, Silicon, etc.
5. Hence, the property of Carbon to form long chains or rings is catenation,
6. Hence, option A is correct.

The explanation for the incorrect option:

B: Polymerisation

1. Polymerisation is defined as the process where long chains of monomers are attached.
2. Therefore, polymerization can be possible in any of the compounds, not particularly Carbon.
3. Hence option B is incorrect.

C: Cracking

1. In the absence of air, the decomposition of compounds with the help of heat is called Pyrolysis.
2. But, when pyrolysis occurs in alkanes such a process is called cracking.
3. Hence option C is incorrect.

D: Hydrogenation

1. Hydrogenation can be defined as the addition of Hydrogen in the presence of a certain catalyst.
2. Generally in the process of hydrogenation, we use Platinum$\mathbf{\left(}\mathbf{Pt}\mathbf{\right)}$ or Palladium$\mathbf{\left(}\mathbf{Pd}\mathbf{\right)}$ at room temperature and Nickel at ${150}^{\circ }\mathrm{C}$.
3. Hence option D is incorrect.

Therefore, option A Catenation is correct, the property of Carbon to form long chains or rings as catenation.