Question

which solution is used to test presence of Carbohydrates and starch​

Answer 1

Answer:A chemical test for starch is to add iodine solution and look for a colour change.

Explanation:In the presence of starch, iodine turns a blue/black colour. It is possible to distinguish starch from glucose (and other carbohydrates) using this iodine solution test.

Answer 2

Iodine solution is used to test the presence of carbohydrates and starch.

• Starch is a carbohydrate.
• The iodine solution is brown in color.
• When starch and iodine solution are mixed, the brown color turns to a dark blue color.
• A component called amylose present in starch is responsible for this blue color.
• Other carbohydrates do not turn to blue color in an iodine solution.
• This way starch and carbohydrates can be distinguished from each other using an iodine solution.