This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Here is the completed table based on standard chemical tests: | TEST | OBSERVATION | INFERENCE | | :----------------------------------------------------------------------------------------------- | :--------------- | :------------------------- | | (a) 2 \, cm^3 of soln A + 3 drops of iodine soln | Reddish brown | Absence of starch | | (b) 2 \, cm^3 of soln B + 2 \, cm^3 of Tollens reagent + boil for 5 minutes | Silver mirror | Presence of reducing sugar | | (c) 2 \, cm^3 of soln C + 5 drops of Biuret reagent, shake carefully and allow to stand for about 3 minutes | Violet/Purple color | Presence of protein | Explanation of changes: For test (a), the iodine test for starch typically yields a blue-black color if starch is present. A reddish-brown observation (the color of iodine solution) indicates the absence of starch*. For test (c), the Biuret test is used to detect proteins. A positive result is a violet or purple color, indicating the presence of protein*. I have assumed a positive result for this test to complete the table. Drop the next question.