What does a blue-black color indicate in the iodine test for starch?a)...
In the iodine test for starch, a blue-black color indicates the presence of starch in the tested food item. Iodine reacts with the starch molecules, forming a characteristic blue-black complex. This test is commonly used to detect the presence of starch in various food samples.
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What does a blue-black color indicate in the iodine test for starch?a)...
I can explain this answer - in iodine KI test
blue and black indicates the presence of starch in the selected item. A blue -black colour results if starch is present. if starch is not present, then the color will stay orange or yellow.
What does a blue-black color indicate in the iodine test for starch?a)...
Explanation:
Blue-black color in the iodine test for starch indicates the presence of starch.
- When iodine comes in contact with starch, it forms a dark blue-black complex known as the starch-iodine complex.
- This color change is a characteristic reaction that is used to detect the presence of starch in a sample.
- The blue-black color indicates that starch is present in the substance being tested.
- In the absence of starch, the iodine solution remains its original color, which is typically brown or yellow.
- Therefore, a blue-black color in the iodine test is a positive result for the presence of starch.