Red
blue
Rea
Red
Blue
Red
Brown/Orange/Yellowy
cause iodine(brown) stains the rice
It turns a dark purple/blue colour
it is a yellowish/orange colour but when iodine is present, than it will turn an dark-blue/black colour
iodine solution
starch will not change its own colour but it can change the colour of iodine solution. iodine solution is originally brown. after adding starch, it will turn into dark blue.
The color not change.
negative
When iodine reacts with starch, the solution will turn a brownish colour.
Iodine is famous for testing of the presence of starch. I would assume starch is present in the solution, therefore iodine would turn blue. Originally, the colour of iodine solution is brown.
The Iodine test uses Iodine solution, which is usually a brown colour. It is used to test for the presence of Starch. Iodine solution, iodine dissolved in an aqueous solution of potassium iodide, reacts with starch producing a blue black color. If the sample being tested doesn't turn blue-black, then starch isn't present.
When iodine is added to starch it turns a blackish color due to a chemical reaction.