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Question

(D) The iodine test is a chemical test used to detect the presence of starch in a sample.When iodine solution ($I_2$ in $KI$) is added to a substance

Vedclass · Accepted Answer

starch

Vedclass · Answer

(D) The iodine test is a chemical test used to detect the presence of starch in a sample.When iodine solution ($I_2$ in $KI$) is added to a substance containing starch,it forms a starch-iodine complex,which results in a characteristic blue-black colour.Since rice water turned blue-black upon the addition of iodine,it confirms the presence of starch in the rice water.Therefore,the correct option is $D$.

$A$ few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

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