MHT CET 2025 Chemistry question

Not in JEE Main or NEET syllabus

Identify sequential reactions involved in Sol-Gel process.

(A)Poly condensation and hydrolysis
(B)Hydrolysis and poly condensationCorrect
(C)Poly condensation and oxidation
(D)Oxidation and hydrolysis

Answer: (B)

Solution

In the sol-gel process for making nanomaterials (e.g. silica or titania), a metal alkoxide or salt precursor first undergoes hydrolysis to give metal hydroxide species (the sol), and these then undergo poly-condensation (with loss of water or alcohol) forming M-O-M linkages to

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Question ID VK-101788