1. Hydrogen is the best reference material for what substance? a. Potassium b. Iron c. Argon d. Nickle 2. What type of density is determined in vacuum at a specified temperature? a. Absolute density b. Relative density c.None of the choices c.Apparent density 3. What is the other name of the plummet method? a. Graduated cylinder method b. Displacement method c. Specific gravity bottle method d. Westphal balance method
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1. Hydrogen is the best reference material for what substance?
a. Potassium b. Iron c. Argon d. Nickle
2. What type of density is determined in vacuum at a specified temperature?
a. Absolute density b. Relative density c.None of the choices c.Apparent density
3. What is the other name of the plummet method?
a. Graduated cylinder method b. Displacement method c. Specific gravity bottle method d. Westphal balance method
4. What solution is NOT measured by Baumé light?
a. Glycerin b. Isopropyl alcohol c. Gasoline d. Benzene
5. What is defined as the ratio of the density of a substance to the density of a given reference material?
a. Neither of the choices b.Specific volume c.Specific gravity d. Either of the choices
6. What is defined as the ratio of the mass of an object in air to the mass of equal volume of water at the same temperature?
a. Relative specific gravity b. Absolute specific gravity c. None of the choices d.Apparent specific gravity
7. Which force reduces surface area?
a. Adhesion b.Cohesion c.Surface tension d.Capillary action
8. What is the simplified CGS unit of interfacial phenomena?
a. g / cm sec b. g / sec² c. cm² / sec d. dynes / cm
Which is NOT a function of a surfactant?
a. Solubilizes hydrophobic drugs b.Vehicle for oral and transdermal drugs c. Plasticizer in semisolid drugs
d. None of the choices
9. Which dosage form is NOT an example of a Newtonian liquid?
a. Tincture b. Elixir c. Suspension d.Syrup
10. What is the simplified CGS unit of
a. cm² / sec b. cm sec / g c. g / sec² d. g / cm sec
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