What is the chemical test to confirm the presence of starch?

Answer 1

Oh, dude, the chemical test to confirm the presence of starch is the iodine test. You basically add iodine solution to your sample, and if it turns blue-black, like the color of a midnight sky, then congrats, you've got starch! It's like magic, but with science.

Answer 2

The chemical test to confirm the presence of starch is the iodine test. Iodine reacts with the starch molecules to form a dark blue-black color complex. This color change is a positive indication of the presence of starch in the sample being tested. The test is commonly used in Biology and biochemistry laboratories to detect the presence of starch in various substances.

Answer 3

1. Place a small amount of starch powder in a test tube filled with cold water

2. Boil it to make a clear solution

3. Once the solution has cooled off, you should put 3 or 4 drops of iodine solution in it.

4. The solution should turn dark blue.

Answer 4

1. Add some starch powder into a test tube containing cool water

2. Give it a shake

3. Boil the solution to make a clear solution

4. Once it's cooled down, add 3-4 drops of iodine

5. The solution should turn blue, proving that starch is present in the solution

If Iodine is added to starch, the solution turns a blue black colour.

Answer 5

You add iodine solution to an unknown solution if the solution goes from a red brown colour to a blue black colour then starch is present.

Answer 6

We can do the following by adding 2-4 drops of iodine solution in it. If the color changes from white (color of starch) to Blue-black color it is confirmed that starch is present.

Answer 7

The iodine test is used to test for the presence of starch. In the presence of an iodine solution, starch turns anywhere from blue to purple to black.

Answer 8

The iodine test is used to confirm the presence of starch. Iodine will turn from brown to blue-black in the presence of starch due to formation of a starch-iodine complex.

Answer 9

an iodine test is used