16. GREEN CHEMISTRY AND NANOCHEMISTRY Textbook Solution

4. Answer the following

iv. What do you mean by sol and gel? Describe the sol-gel method of preparation for nanoparticles.

Answer:-

Sol-gel method (Wet chemical synthesis of nanomaterials): i. Sol: Sols are dispersions of colloidal particles in a liquid. ii. Gel: A gel is an interconnected rigid network with pores of sub-micrometer dimensions and polymeric chains whose average length is greater than a micrometer.

16. GREEN CHEMISTRY AND NANOCHEMISTRY Class 12 Chemistry Textbook Solution page 352