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प्रश्न
Answer the following
What do you mean by sol and gel?
उत्तर
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.
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संबंधित प्रश्न
Answer the following
Ridhima wants to detect the structure of the surface of materials. Name the technique she has to use.
Answer the following
Describe the sol-gel method of preparation for nanoparticles.
Complete and write the following table.
| S/N | Nanomaterial dimension | Nanomaterial type |
| a) | One-dimension < 100 nm | ___________________ |
| b) | Two-dimension < 100 nm | ___________________ |
In which of the following nanomaterial, all three dimensions are less than 100 nm?
In which of the following nanomaterial, only one dimension is less than 100 nm?
Write the name of the technique used to know geometry of nanoparticles.
Name the two apbroaches used to synthesize nanomaterials.
Explain the zero, one and two-dimensional nanoscale system.
What is nano material?
Write the reaction involved in sol-gel process during hydrolysis.
