Which one of the following will give a positive iodine test (blue-black) color. Pick more than one. a. cellulose b. starch c. D-fructose d. lactose e. amylose
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An unknown liquid sample is tested for chemical composition. You receive the following results: iodine test = yellow; biuret test = purple; Benedict's test = red; and paper lipid test = clear. Which of the following are present in this sample? (Select all that apply) A. starch B. protein C. sugar D. lipids E. None of these are present.
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Iodine is tested by the following reagent: (a) Starch (b) Urea (c) Glucose (d) Glycerol
Which of the following halogens turn(s) starch iodine paper blue? (a) $\mathrm{Cl}_{2}$ (b) $\mathrm{Br}_{2}$ (c) $\mathrm{I}_{2}$ (d) $\mathrm{F}_{2}$
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