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Nek's Important Stuff- Lecture 6 Questions With Complete Solutions
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Nek's Important Stuff- Lecture 6 Questions With Complete Solutions
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Nek's Important Stuff- Lecture 6 Questions With CompleteSolutions
_________ have water-soluble (hydrophilic) properties at one
end of the molecule and lipophilic properties at the other!!
Correct Answer Surfactants
A central region appears in which three conjugate liquid phases
exist in equilibrium, in this region F=? for a condensed system
under isothermal conditions. Correct Answer 0
Almost all gums display thickening property, whereas some
show _________ property!! Correct Answer Gelling
Although thickening is a desirable property for solution,
suspension, and emulsion dosage forms, the property of gelling
is utilized in drug ___________ for controlled delivery
applications. Correct Answer Encapsulation
As the temperature is raised, the region of immiscibility
__________ Correct Answer Decreases
As we move along AB in the direction of B, we are signifying
systems of A and B containing __________ concentrations of B
Correct Answer Increasing
Because of their hydrophilicity and high molecular weight,
________ are the candidate of choice for increasing the
viscosity of the aqueous solutions or dispersions. Correct
Answer Gums
, Because we are dealing with a three-component system, it is
more convenient to use _________ coordinate graphs, although
it is possible to use rectangular coordinates. Correct Answer
Triangular
Cellulose Based Polymers:
R group:
Polymer: Methyl cellulose (MC)
Characteristics: Correct Answer Cellulose Based Polymers:
R group: H and CH3
Polymer: Methyl cellulose (MC)
Characteristics: Soluble in cold water only. Swells and disperses
slowly in cold water to form colloid dispersion. Practically
insoluble in ethanol, saturated salt solutions, and hot water
Cellulose Based Polymers:
R group:
Polymer: Cellulose
Characteristics: Correct Answer Cellulose Based Polymers:
R group: H
Polymer: Cellulose
Characteristics: Water-insoluble due to excessive hydrogen
boning
Changes in ____________ will cause the area of immiscibility,
bounded by the binodal curve, to change!!! Correct Answer
Temperature
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