Surfactant is:
A. Н2О
B. NaCl
C. C2H5OH
D. HNO3
E. K4Fe[(CN)6]
ANSWER: C
How many times will the surface activity of surfactant increase according to the
increasing of the hydrocarbon radical on group – СН2?
A. in 2.5 times;
B. in 3,5 times
C. in 1,5 times;
D. in 4,5 times;
E. in 5,5 times
ANSWER: B
What is the dimension (unit) of the surface tension?
A. Dynes /m2
B. Dynes.m2
C. Dynes/kJм2
D. J/ m2
E. J kg/m2
ANSWER: D
What is name of the substances which decrease the surface tension when their
concentration is growing?
A. Hydrophilic.
B. Hydrophobic
C. Surfactant
D. Unsurfactant
E. Selection
ANSWER: C
What is the name of the interaction between molecules inside one phase?
A. Adhesion
B. Surface tension
C. Cohesion
D. Wetting
E. Capillary condensation
ANSWER: C
The process of wetting is:
A. Endotermic
B. Reverse
C. Exotermic
D. Isochoryc
E. Isotermic
ANSWER: C
What can surfactants do?
A. increase the surface tension on the interface of phases
B. reduce surface tension on the interface of phases
C. increase the energy of the surface molecules
D. do not change the surface tension on the interface of phases
E. increase free energy of the surface on the interface of phases
ANSWER: B
The change in concentration of one or more components in the surface layer of
sorbent is called
A. Absorption
B. Adsorption
C. Desorption
D. Chemosorption
E. Capillary condensation
ANSWER: B
What’s phenomenon observed when carbon dioxide absorption of calcium oxide?
A. Absorption
B. Adsorption
C. Desorption
D. Chemisorption
E. Capillary condensation
ANSWER: D
What’s phenomenon observing when the all volume of the liquid phase absorb the
inert gas?
A. Absorption
B. Adsorption
C. Desorption
D. Chemisorption
E. Capillary condensation
ANSWER: A
The chromatography is based on the phenomenon of:
A. Osmosis
B. Adsorption
C. Electrophoresis
D. Electrolysis
E. Coagulations
ANSWER: B
The chromatography is the method of the analysis which is grounded on the
redistribution of the substance between:
A. Moving and nonmoving phases
B. Two moving phases which don’t mix between each other.
C. Liquid and solid phases
D. Liquid and gas phases
E. Solid and gas phases
ANSWER: A
What’s characterizing a chemosorption:
A. The process is reversible process
B. The heat of process is low
C. The heat of process is high
D. It doesn’t require any an active energy
E. All process
ANSWER: C
What’s characterizing an physical adsorption:
A. It forms multimolecules layer
B. It forms unimolecular layer
C. Surface compound are formed
D. The process is irreversible process
E. The heat of process is high
ANSWER: A
The suspension of what adsorbent is used for removal of intoxication caused by
alkaloid poisoning?
A. activated charcoal
B. silica
C. bentonite
D. caoline
E. starch
ANSWER: A
If the solute is adsorbed more strongly than the solvent, it is
A. negative adsorption
B. positive adsorption
C. chemisorption
D. cohesion
E. wetting
ANSWER: B
The surface of which adsorbent is covered by Si-OH groups?
A. cellulose
B. activated carbon
C. formaldehyde resin
D. silica
E. talc
ANSWER: D
Which adsorbent is used for surfactants adsorption from polar solvents.
A. Silica gel.
B. Activated charcoal.
C. Graphite
D. Talc.
E. None
ANSWER: A
Application of an activated charcoal in medical practice based on its:
A. Strong adsorption capacity;
B. Hydrophobic properties;
C. Hydrophilic properties;
D. Minor density;
E. Solubility in water
ANSWER: A
Dependence of an adsorption from the concentration of solution or pressure at the
same temperature is described by:
A. Gibb’s equation
B. Helmholts’s equation
C. Stephen Brunauer’s equation
D. Langmuir’s equation
E. Shyshkovskiy’s equation
ANSWER: D
Choose a synonym for limiting adsorption:
A. Adsorption capacity
B. Specific occupancy
C. Adsorption capacity
D. Capacity of monolayers
E. Degree of surface coverage
ANSWER: D
What adsorbents are called the molecular sieves?
A. soot
B. phenol-formaldehyde resins
C. zeolite
D. clay
E. activated charcoal
ANSWER: C
What factor prevents adsorptive interaction with the adsorbent.
A. Reducing the temperature
B. Incureasing pressure
C. Increasing temperature
D. Any factors do not affect
E. Increasing concentration
ANSWER: C
In pharmaceutical practice widely used adsorbents. An important characteristic of
adsorbents is the specific surface area, which is defined as
A. The area of the interface
B. The area of one particle.
C. The ratio of the surface area of the phase separation to the mass of the
dispersed phase
D. The ratio of the surface area of the phase separation to the mass of one
particle
E. The ratio of the surface area of the interface to the square of one particle
ANSWER: C
The microcrystals of hard soluble substance in the center of micelle form:
A. aggregate
B. diffuse layer of contrions
C. grain
D. layer of potential determining ions
E. adsorption layer of contrions
ANSWER: A
What is characterized of Brownian motion of dispersed systems particles?
A. average displacement
B. diffusion coefficient.
C. Speed sedimentation.
D. zeta-potential.
E. Speed coagulation.
ANSWER: A
When a strong beam of light is passed through a MnO2 sol's solution the there is
available the following phenomenon:
A. scattering of light;
B. interference of light;
C. light reflection;
D. Optimal anisotropy
E. No one
ANSWER: A
Many drugs are dispersed systems. Which type of dispersed systems are
emulsions?
A. L-L
B. L-S
C. S-S
D. S-L
E. G-L
ANSWER: A
In the pharmacy there are often used medicines such as suspensions. Which type of
disperse systems is this?
A. S-L
B. G-g.
C. G-L.
D. L-L.
E. L-G.
ANSWER: A
Hydrosols of sulfur, cholesterol are obtained by the adding alcohol solutions of
these substances to water. What the method is used?
A. Changing the solvent.
B. Chemical condensation.
C. condensation of steam.
D. mechanical dispersion.
E. Chemical condensation.
ANSWER: A
The structural unit of the colloidal solution of medicinal substance is.
A. micelle
B. molecule
C. atom
D. ion
E. zwitter-ion
ANSWER: A
Dispersed systems are used in pharmaceutical practice. The method of
confirmation of the colloidal state is the passage of light through the system.
According to that the beam of light:
A. scattering in the form of a luminous cone
B. affects
C. absorbed
D. undergoes refraction
E. penetrates into the particle
ANSWER: A
Some drugs are colloidal solutions. Colloidal dispersion systems are the systems
which include, the next size of particles:
A. 10-9- 10-7 m
B. 10-7-10-4 m
C. 10-4 m
D. 10-9 m
E. 10-9- 10-4 m
ANSWER: A
In the pharmacy practice, there is used the microheterogeneous systems with a
liquid dispersion and solid disperse phase. This dosage form is:
A. Suspension
B. foam
C. powder
D. Aerosol
E. Emulsion
ANSWER: A
Emulsion, ointment, pasta, etc., can be prepared by crushing of solid and liquid
substances in suitable environment. This method is called
A. dispersion
B. condensation
C. sedimentation
D. coagulation
E. adhesion
ANSWER: A
Sol Al(OH)3 was received by a converting a freshly prepared precipitate of
Al(OH)3 by a small quantity of HC1 solution. Which is the method of the sol
preparation?
A. Chemical peptisation
B. chemical condensation
C. Washing solvent
D. Mechanical dispersion
E. physical condensation
ANSWER: A
In pharmaceutical manufacturing practices are widely used drugs in the form of
colloid-disperse systems. What method of sol obtaining belongs to the physical
condensation?
A. Exange of a solvent
B. Recovery
C. Oxidation
D. hydrolysis
E. double exchange
ANSWER: A
For purification of the colloidal solution is used such method as:
A. Dialysis
B. Titration;
C. Electrodialysis;
D. Ultrafiltration;
E. Ultracentrifugation
ANSWER: D
What from of dispersion system is the smoke (G-gas, L-Liquid, S-solid)?
A. G/S;
B. S/S;
C. L/L;
D. S/G;
E. G/L
ANSWER: D
System with size dispersed phase particle less 10-9 m is:
A. True solution;
B. Microheterogeneous;
C. Macroheterogeneous;
D. Homogeneous;
E. Colloidal solution.
ANSWER: A
The average molecular mass of colloidal particles can be accurately determined by
A. measurement of osmotic pressure
B. tyndall effect
C. brownian movement
D. flocculation value
E. coagulation value
ANSWER: A
The process of separation of colloids by passing through semi-permeable
membrane is called
A. filtration
B. electrophoresis
C. dialysis
D. ultrafiltration
E. none of the above
ANSWER: C
Medicines are often prepared as suspension. Which of the following phenomena
characterize suspension?
A. А. diffusion
B. В, sedimentation
C. С. osmosis
D. Brownian movement
E. Е. Opalescence
ANSWER: B
Free dispersion systems are
A. Gel
B. Foam
C. Emulsion
D. Ointment
E. Past
ANSWER: C
Osmotic pressure of colloid systems…
A. is very low
B. doesn’t change according to the increasing of temperature
C. is very high
D. very strongly change at the light
E. no correct answer
ANSWER: A
How does the Brownian motion change according to the increasing of the colloid
particle radius?
A. increase its fluctuating motion
B. the Brownian motion decreases
C. the Brownian motion increase
D. the fusion increase
E. the sedimentation goes slowly
ANSWER: B
What the potential predetermines colloid stability?
A. chemical
B. electrode
C. electro kinetic (zeta)
D. deffuse
E. thermodynamics
ANSWER: C
What the phenomena is not electro kinetic?
A. standard electrode potential
B. electrophoresis
C. electro-osmosis
D. streaming potential
E. sedimentation potential
ANSWER: A
The electrophoretic mobility is more when:
A. the lesser net charge on the particle and the lesser the value of Zeta-potential
B. the more particle mass
C. the more viscosity of the dispersed medium
D. the more concentration of the opposite charge ions
E. the more charge of the particle and the value of zeta-potential
ANSWER: E
What is the electro-osmosis?
A. the motion of particles of the dispersible phase
B. the motion of polar liquid through a membrane or other porous structure
under the influence of an applied electric field
C. the diffuse motion of particles
D. the motion of particles of dispersible phase at centrifuging process.
E. the motion of particles of the dispersible phase in electric field
ANSWER: B
What is happened if the charge of the colloid particles is positive, at
electrophoresis –process?
A. they move to the cathode
B. they move to the anode
C. they stay at the beginning of the start
D. the precipitate
E. they coagulate
ANSWER: A
What the net charge of the colloidal particles (micelle) of Fe(OH)3 in the water
solution of FeCl3:
A. positive charge
B. negative charge
C. without charge
D. micelle exists in isoelectric point
E. precipitate out
ANSWER: A
The determination of electrokinetic (zeta) potential is…
A. V/m
B. V/m2
C. V
D. Wt
E. J/V
ANSWER: C
The coagulation power of an electrolytes ions depend on:
A. mole fraction concentration of sol
B. the charge of coagulation ions
C. the viscosity of the dispersed medium
D. the level of the dispersion of sol
E. pressure
ANSWER: B
Coagulation power of an electrolyte is directly proportional to the:
A. viscosity of the dispersed medium
B. degree of dissociation
C. dissociation constant
D. valency of its ions
E. none of the above
ANSWER: D
Pharmacist prepared protargol which is the colloidal solution of silver (I) oxide.
For the increasing its stability pharmacist added high molecular compound
(protein). Using the meaning of gold number (mg) choose high molecular
compound that has the highest protection ability.
A. gelatin – 0,035
B. egg’s albumin – 2,5
C. dextrin – 100,0
D. saponins – 35,0
E. none of the above
ANSWER: A
Choose the structural and the mechanical behavior of the dispersion systems:
A. diffusion, viscosity
B. osmotic pressure, elasticity
C. elasticity, transparency
D. viscosity, elasticity
E. diffusion, strength
ANSWER: D
Which is value inversely proportional to viscosity?
A. fluidity
B. strength
C. elasticity
D. plasticity
E. diffusion
ANSWER: A
What is the name the phenomena when the sheared system is allowed to stand, it
eventually regains its original structure?
A. asymmetropy
B. thixotropy
C. rheopexy
D. mechanical stability
E. sedimentation stability
ANSWER: B
The slow flow with constant viscosity without the destruction of the structure of
the system is called ...
A. creep
B. strength
C. elasticity
D. plasticity
E. diffusion
ANSWER: A
The science which is study about deformation and flow of matter, and its study has
contributed much towards clarifying ideas concerning the nature of colloidal
systems is called…..
A. surface chemistry
B. colloidal chemistry
C. rheology
D. phase analysis
E. kinetics
ANSWER: C
The determination of viscosity is….
A. N/mol
B. N*s
C. mol/s
D. J/mol
E. Pа*s
ANSWER: E
The viscosity is increase when…
A. temperature reduced
B. surfactants exist in solution
C. reduced the particle concentration
D. reduced the activation energy
E. рН = 7
ANSWER: A
Measuring the viscosity is the base of the following analysis method:
A. nefelometry
B. stalahmometry
C. osmometry
D. electrophoresis
E. viscosometry
ANSWER: E
The relative viscosities of two liquids can be determined by using of a:
A. Stock’s viscometer
B. Lengmuir’s viscometer
C. Vant Hoff’s viscometer
D. Ostwald’s viscometer
E. none of the above
ANSWER: D
The pressure at any instant driving the liquid through the capillary is proportional
to its…
A. concentration
B. pressure
C. Brownian movement
D. temperature
E. density
ANSWER: E
What’s the name of process which characterizes the coming of drops together in
close association in emulsion?
A. coagulation
B. flocculation
C. sedimentation
D. coalescense
E. diffusion
ANSWER: D
Choose the surfactant which will the best stabilize emulsion of the type “oilwater”:
A. ethanol;
B. sodium sulfate;
C. casein
D. potassium chloride
E. benzene
ANSWER: C
A lot of medicines are the dispersion system. Which of the type of the dispersed
system has emulsion?
A. liquid – liquid
B. liquid – solid
C. solid – solid
D. solid – liquid
E. gas – liquid
ANSWER: A
For increasing stability of the suspension to add…
A. gelatin
B. glucose
C. ethanol
D. sodium chloride
E. none of the above
ANSWER: A
For what dispersion system sedimentation exists?
A. suspension
B. solution of high molecular compound
C. solution of nonelectrolytes
D. solution of electrolytes
E. foams
ANSWER: A
Which of the type of the dispersed system has foams?
A. liquid/liquid
B. liquid/gas
C. solid/liquid
D. solid/solid
E. gas/liquid
ANSWER: E
Some foams can freeze on the air (hemostatic sponge). Which of the type of the
dispersed system has foams?
A. gas/solid
B. gas/liquid
C. liquid/liquid
D. liquid/gas
E. solid/liquid
ANSWER: A
The stable foams you can obtain by adding …. to water:
A. alcohols
B. short-chain fatty acids
C. oil
D. saponins
E. dyes
ANSWER: D
Suspension filtration through the porous membrane leads to the formation of
A. past
B. foam
C. powder
D. sol
E. crystalline substance
ANSWER: A
Past – is
A. the maximum concentrated emulsions
B. the maximum concentrated suspensions
C. foams which have the tendency for the liquid films to drain and become
thinner
D. coagulation of aerosol
E. emulsion of the liquid metals in water
ANSWER: B
For what type of emulsion can you use hydrophilic emulsifier?
A. water/oil
B. oil/water
C. diluted
D. concentrated
E. liquid metals in water
ANSWER: B
Which of the following coarse dispersion system don’t contain the stabilization
factors?
A. Aerosol
B. suspension
C. emulsion
D. foam
E. none of the above
ANSWER: A
Which of the following dispersion system is porous?
A. gas/solid;
B. liquid/gas;
C. liquid/liquid;
D. solid/gas;
E. gas/liquid.
ANSWER: A
Which of the following optical property is the most intensive in suspensions?
A. scattering of the light
B. absorption of light
C. refracted light
D. light transmission
E. none of the above
ANSWER: A
What type of emulsion is the butter?
A. suspension
B. emulsion oil/water
C. emulsion water/oil
D. sol
E. past
ANSWER: C
What type of the dispersion system is juice?
A. suspension
B. emulsion oil/water
C. emulsion water/oil
D. sol
E. past
ANSWER: A
What type of the dispersion system are pasts?
A. diluted suspension
B. emulsion oil/water
C. emulsion water/oil
D. jelly emulsion
E. concentrated suspension
ANSWER: E
What type of the dispersion system is milk?
A. suspension
B. emulsion oil/water
C. emulsion water/oil
D. sol
E. past
ANSWER: B
What type of the dispersion system are clouds?
A. foam
B. hydrosol
C. aerosol
D. suspension
E. powder
ANSWER: C
What type of the dispersion system is baby powder?
A. suspension
B. foam
C. powder
D. sol
E. past
ANSWER: C
If emulsion better dissolve in water than in benzene that means this emulsion is…
A. diluted
B. concentrated
C. high concentrated
D. oil/water
E. water/oil
ANSWER: D
If emulsion good conduct electric current that means this emulsion is...
A. diluted
B. concentrated
C. high concentrated
D. oil/water
E. water/oil
ANSWER: D
What are gels?
A. a colloidal system in which a liquid is dispersed in a liquid
B. a colloidal system in which a gas is dispersed in a solid
C. a colloidal system in which a liquid is dispersed in a solid
D. a colloidal system in which a solid is dispersed in a liquid
E. none of the above
ANSWER: C
What’s the name of gel formation process?
A. gelation
B. precipitation
C. sedimentation
D. coagulation
E. flocculation
ANSWER: A
What the charge has the carboxyhemoglobin (рН at the isoelectric point is 6,87), is
placed in the buffer solution with рН=7,21?
A. positive
B. negative
C. neutral
D. 6,87
E. 1
ANSWER: B
The macromolecule’s solutions are widely used in Pharmacy. What is the property
of the true solution the macromolecule’s solutions have?
A. Brownian movement
B. present of the surface division
C. scattering of light
D. the great value of relative viscosity
E. thermodynamic stability
ANSWER: E
The viscosity of HMC solution is:
A. higher than viscosity of the colloidal solution
B. equilibrium to the viscosity of the low molecular compounds
C. equilibrium to the viscosity of water
D. equilibrium to the viscosity of the colloidal solution
E. less than viscosity of the colloidal solution
ANSWER: A
At the isoelectric point the protein charges:
A. negative
B. positive
C. neutral
D. 1 мV
E. 1 мV
ANSWER: C
The salting out effect depends on
A. molecular mass of electrolytes
B. the movement rate of the ions
C. temperature
D. hydration degree
E. duration of the action
ANSWER: D
Oncotic pressure of blood dues to the present of:
A. low molecular compounds
B. non-electrolytes
C. protein’s components
D. Water
E. surfactants
ANSWER: C
The pH of the isoelectric point is 4,7. At wich рН macroion of the protein moves to
the cathode?
A. 7,0
B. 11,5
C. 5,0
D. 4,7
E. 3,5
ANSWER: E
At the weakening of the protective action of the proteins the cholesterol deposits
on the walls of the blood vessels due to the aggregation of its particles, this
phenomenon is
A. peptization
B. sensibilize
C. coagulation
D. syneresis
E. thixotropy
ANSWER: C
The method, which involves the removal of the low molecular weight impurities
from colloidal systems and solutions of HMC by the diffusion through a
semipermeable membrane is called:
A. electrodyalysis
B. decantation
C. compensatory dialysis
D. dialysis
E. ultrafiltration
ANSWER: D
The swelling process of HMC is described by the kinetic equation of the…
A. 0 order
B. Fractional order
C. 1 order
D. 2 order
E. 3 order
ANSWER: C