The tail of a surfactant molecule is oil-loving or known as ________?
a. Hydrophilic
b. Lipophobic
c. Lipophilic
d. Hydrophilic

Oil and Water is an example of a(n)...
a. Suspension
b. Emulsion
c. Colloid
d. Solution

In the stability of emulsion, which important instability step should be prevented?
a. Breaking
b. Coalescence
c. Flocculation
d. Creaming

Dye test which is used to identify type of emulsion in that which dye is used?
a. Scarlet red
b. Scarlet green
c. Crystal violet
d. Methylene blue

In conductivity test, if bulb glows on passing electric current so what would be the type of emulsion?
a. W/O emulsion
b. O/W emulsion
c. Micro emulsion
d. Multiple emulsion

In micro emulsion, the size of globules are__
a. 1 um
b. 0.1 um
c. 0.01 um
d. 10 um

If viscosity of continuous phase increase so creaming __
a. No change
b. Increase
c. Decrease
d. None of the above

In case of coalescence ____
a. Dispersed droplet does not fuse
b. Globules size decrease
c. No of globules increase
d. Dispersed droplets tend to fuse

In case of O/W emulsion, creaming takes place at______
a. Down side
b. Upside
c. At interface between two phase
d. None of the above

Which of the following is not an example of a water-in-oil emulsion?
a. Cod liver oil
b. Butter
c. Cold cream
d. Milk

What is the difference between vanishing cream and cold cream?
a. Both are examples of oil-in-water emulsions
b. Vanishing cream is an oil-in-water emulsion whereas cold cream is a water-in-oil emulsion
c. Vanishing cream is a water-in-oil emulsion whereas cold cream is an oil-in-water emulsion
d. Both are examples of water-in-oil emulsions