Engineering Chemistry Laboratory Viva voice questions and answers
13. Preparation of ZnO nanoparticles by Sol-Gel method
Chemistry (Lab) Practical : Viva – voice questions & answers
Engineering Chemistry Laboratory : 13. Preparation of ZnO nanoparticles by Sol-Gel method : Viva – voice questions & answers
VIVA – VOICE QUESTIONS & ANSWERS
13. Preparation of ZnO nanoparticles by Sol-Gel method
1.
What are nanoparticles.
The
particles the size of which ranges from 1-50 nm is called nanoparticles.
2.
What is sol-gel process?
Method
of producing solid materials from small molecules.
3.
What is top-down process?
Conversion
of bulk materials into smaller particles..
4.
What is bottom-up process?
Building-up
of materials from the bottom by atom by atom.
5.
What are the precursors used in the preparation of ZnO nanoparticles.
ZnCl2,
Zn(NO3)2 and NaOH.
6.
What is the solvent used in ZnO preparation.
Water
7.
At what temperature ZnO particles are formed?
50°
- 90°
Engineering Chemistry Laboratory Viva voice questions and answers : Tag: : Chemistry (Lab) Practical : Viva – voice questions & answers - 13. Preparation of ZnO nanoparticles by Sol-Gel method
Related Topics
Related Subjects
Physics and Chemistry Laboratory
BS3171 Practical Experiment 2021 Regulation | 1st Semester Common to all Dept 2021 Regulation