Sol gel interview questions
Sol gel interview questions
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Total Questions: 15
1. Sol-gel method is ________ approach.
Correct Answer is : Bottom up
2. Sol-gel method is known since ____________
Correct Answer is : 1980
3. The sol-gel is a __________ of solid particle.
Correct Answer is : Colloidal suspension
4. The gel is a ___________ mass.
Correct Answer is : Semi regid
5. Sol-gel method is ________ chemical process.
Correct Answer is : Wet
6. __________ undergo hydrolysis and poly condensation reactions.
Correct Answer is : Metal oxides
7. The solvent evolves towards the formation of an inorganic continuous network containing a ___________
Correct Answer is : Gel
8. Formation of an inorganic continuous network containing the metal centres with _________
Correct Answer is : Oxo
9. After drying process the liquid phase is removed from the gel and ___________ is performed.
Correct Answer is : Calcination
10. One of the advantages of sol-gel method is able to get uniform and _________ powder.
Correct Answer is : Small size
11. Sol-gel method can produce __________ systems.
Correct Answer is : Uniform multi component
12. Metal nano particles particularly _____________ nano particles are prepared by the chemical reduction method.
Correct Answer is : Silver
13. The ___________ and citrate solution are used as reducing agents in chemical reduction method.
Correct Answer is : Hydrazine hydrate
14. To remove the excess silver ions the solution is washed with _________ under nitrogen stream.
Correct Answer is : Deioniser water
15. The transparent colourless solution solution is changed into pale yellow from ___________ in chemical reduction method.
Correct Answer is : Pale red
