Do these reagents fit with the substance being testd for?

First is Biuret reagent protein

Second is BACL^2 starch

Third is AgNO^3 chloride ion

Final is albustix protein.

I can help with two of these.
BaCl2 is used to test for sulfates, not starch.
AgNO3 is used to test for the chloride ion.

Biuret is a test for protein.
Albustix is a test for protein.

This question is written badly. The reagent is the item on the left and the test is written after it Bacl2 as is written above is a test for sulfites and not starch so this is the one that does not belong.

To determine if the reagents mentioned fit with the substances being tested for, we need to analyze each reagent and its purpose.

1. Biuret reagent: This reagent is utilized to test for the presence of protein. To perform the test, add a few drops of the Biuret reagent to the solution being tested. If a color change occurs (typically from blue to violet or pink), it indicates the presence of proteins.

2. BaCl2: This reagent is not used to test for starch but rather for sulfates. If you want to test for starch, you should use iodine solution instead. BaCl2 can react with sulfates to form a white precipitate.

3. AgNO3: This reagent is commonly employed to test for chloride ions. When combined with a solution containing chloride ions, AgNO3 forms a white precipitate known as silver chloride.

4. Albustix: This is a commercial test strip used for detecting protein in urine. By dipping the Albustix strip into urine, the color change on the strip can indicate the presence of protein.

Therefore, from the given reagents and substances being tested for, Biuret reagent and Albustix are suitable for testing protein, while BaCl2 is used for sulfates and AgNO3 is used for chloride ions.