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- Which of the following is not used as an antiseptic? A. Chlorhexidine B. Phenol C. Iodophor D. Hydrogen PeroxideWhich of the following sulfonamides is used topically in burns? a. Sulfadoxime b. Apsone c. Silver sulfadiazine d. Sulphaethoxazole e. Sulfamethazine f. Sulfametizole g. Phthalylsulfathiazole.1. Anaturally occurring antioxidant. (select all the apply) a. vitamin a b. vitamin c c. vitamin e d. butylated toluene 2.Which of the following is not true about fixed oils? select all that apply can be distilled b. can leave a greasy spot a. c. it has characteristics odor d. some are heavier 3.serve as a means of classifying fixed oils. a. iodine number b. Polenske number C. acetyl number d. saponification number 3.used to determine the efficiency/freshness of fixed oil or fat a. acid number b. reichert meissl number c. polenske 4.which of the following is false about lipids? a they are either strongly hydrophobic or amphipathic b.they are more soluble in water c.they are insoluble water.
- In slides stained with hematoxylin and eosin, the section 2. appears very pink with pale-reddish brown nuclei. Of the following, the most appropriate action is to a. Restain the sections for a longer time in hematoxylin b. Discard and replace the ammonia water c. Replace the hematoxylin with fresh solution d. Change all solutions and restain 131. Prepare 200 mL of an isotonic aqueous solution of thimerosal (MW 404.84; L iso 3.4). The concentration of this antiinfective drug is 1:5000. a. Calculate the E value. b. Adjust the Isotonicity of the solution using NaCl.Silvadene, a topical treatment for burns, contains 1% silver. What category of chemical antimicrobial agent is in Silvadene? Select one: a.antibiotics b.None of the Above c.halogens d.aldehydes e.oxidizing agents
- 1. Calamine Lotion is classified as a suspension. What is a suspension? A. It is a disperse system in which solid, vehicle-insoluble particles (internal phase) are uniformlysuspended by mechanical agitation and formulation design throughout the liquid vehicle(external phase).B. It is a clear, flavored, sweetened, hydroalcoholic liquid oral preparation that usually containeither potent or unpleasant tasting drugsC. It is a concentrated aqueous solution containing one or more sugar components, chiefly sucrose,or sugar substituteD. It is a viscous oral liquid containing one or more medicament dissolved in a vehicle that usuallycontains high proportion of sucrose or other sugars.30. What test could distinguish between palmitate and linoleic acid? a. Huble's test b. saponification c. both a and b d. neither a nor b 36. What was added to the sample prior to heating in acrolein test? a. KHSO4 b. ethanol c. both a and b d. neither a nor b 37. Which of the following is a general test for lipids? a. solubility test b. Huble's test c. both a and b d. neither a nor bA mixture containing glutamic acid, arginine, phenylalanine and valine was subjected to anion exchange chromatography at pH 7.0. Which of the amino acids interacted with the resin (anion exchanger) and last to be eluted with a buffer of decreasing pH? A. Glu B. Val C. Phe D. Arg
- 1. what cause the reaction of the rancid oil to ph paper to be different from that fresh oil 2. what is the chemical significance of rancid oil 3. what is the principle involved in the development of rancidity ? what are the stages in the development of rancidity. 4.define emulsifcation and surface tension. 5. cite some biological significance of emulsification and surface tension 6. what is the significance of the bromine test ? explain the meaning of the results . 7. explian the differences in the number of drops of liquid delivered using the same 1ml pippete33. Which of the following is an emulsifying agent? a. bile salt b. NarCOs c. both a and b d. neither a nor b 34. What reaction occurs during saponification of triacylglycerol? a. hydrolysis b. condensation c. both a and b d. neither a nor b 36. What was added to the sample prior to heating in acrolein test? a. KHSO4 b. ethanol c. both a and b d. neither a nor b 37. Which of the following is a general test for lipids? a. solubility test b. Huble's test c. both a and b d. neither a nor b 38. Which test can distinguish between sesame oil and corn oil? a. Burchard test b. Baudouin test c. Sudan IV test d. Dichromate test 39. What solvent would be miscible with coconut oil? a. chloroform b. water c. both a and b d. neither a nor b 40. Which of the following is a product of saponification of fatty acids? a. glycerol b. NaOH c. both a and b d. neither a nor b1. a. Disk A b. Disk B c. Disk C d. Disk D 2. a. Strip A with MIC at 0.25 μg/mL b. Strip B with MIC at 0.064 μg/mL c. Strip C with MIC at 0.075 μg/mL d. All of the strips show equal antimicrobial efficacy