WAEC Chemistry 2015 Theory — Question 32

Question 32 of 49 from the West African Examinations Council (WAEC) Chemistry 2015 Theory paper, with the correct answer and a full explanation.

3(d)(iv). Describe briefly a chemical test to confirm the presence of starch.

Model answer

A few drops of iodine solution should be added to the suspected material. If a dark-blue (blue-black) coloration appears, starch is present.

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