1. What are these chemically. A) Tween 20. B) Span 80
2. Exapand DLVO. What is the significance of gold no.
3. Nitrocellulose in nail lacquer act as ________
4. Exaplain stokes law.
5. advantage of ubbelhode viscometer over ostwald viscometer.
6. What is zeta potential. Addition of electrolytes will ______ zeta potential.
7. Give two principal surfactants used in shampoos.
8. What is a) freeze drying b) Hatch choate equation c) kozency carman equation d) Bancroft rule
9. Define structured vehicle. Name three antioxidants used in suspensions.
10 Give three emulsifying bases used in suppositories.
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