. Assertion In the iodometric titration starch is used as an indicator
Reason Starch is a polysaccharide.
Solution : Starch solution gives a blue (purple) colour with a drop of iodine solution because it form a starch iodide complex which is purple in coulur. When it is titrated its colour disappear. So it is used in iodometric titration as an indicator. Strach is a polysaccharide. So, both the statements are true but reason is not correct explanation of assertion.