Question

A sol gel process is based on

• A. synthetic polymerization process
• B. semi-synthetic polymerization process
• C. inorganic polymerization reactions
• D. natural polymerization process

Hint:

In the sol-gel method, metal alkoxides are hydrolysed and condensed to form an inorganic network.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
The sol-gel process starts with inorganic precursors such as metal alkoxides, for example \(\text{Si(OR)}_{4}\).

Step 2: Steps involved
The precursors are hydrolysed and then condensed. Condensation joins M-O-M bridges, forming a colloidal sol that sets into a gel.

Step 3: Conclusion
Because the network is built from inorganic units, the process is based on inorganic polymerisation reactions.

Final Answer:
The sol-gel process is based on inorganic polymerisation reactions. \[ \boxed{\text{(C) }\text{inorganic polymerization reactions}} \]