Question

an unknown liquid sample is tested for chemical composition. you receive the following results: iodine test = yellow, biuret test = blue, benedicts test = blue, and paper lipid test = clear. which of the following are present in this sample? (select all that apply) check all that apply starch protein sugar lipids none of these are present

Explanation:

The iodine test is yellow which means no starch (starch turns iodine blue - black). The biuret test is blue indicating no protein (protein gives a violet - purple color in biuret test). Benedict's test result is not given but assuming normal blue color means no reducing sugar. The paper lipid test is clear meaning no lipids.

Answer:

None of these are present