All Questions page - 739

Immiscibility of oil and water can be overcome by,
a. Formulating an emulsion
b. Formulating suspension
c. Formulating an insufflation
d. Formulating an elixir

Chemical incompatibility can be intentional i.e. a prescriber knowingly gives incompatible drugs, or unintentional i.e. prescriber does not know that the drugs are incompatible.
a. True
b. False

Chemical incompatibility in which change in formulation is needed is called as,
a. Tolerated incompatibility
b. Adjusted incompatibility.

Chemical incompatibility which can be reduced by using dilute solutions or simply changing the order of mixing is called,
a. Tolerated incompatibility.
b. Adjusted incompatibility.

In the mixing of thymol and menthol the following type of incompatibility occurs,
a. Chemical incompatibility
b. Therapeutic incompatibility
c. Physical incompatibility
d. Tolerance incompatibility

What type of emulsion is a w/o/w emulsion?
a. Primary emulsion
b. Micro-emulsion
c. Multiple-emulsion
d. Monoemulsion

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

Which of the following is not a method to test the type of emulsion?
a. Microscopic method
b. Conductance method
c. Coagulation method
d. Dye method