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4. Amyloso gives a positive iodine test and a negative test with Fehlings reagent. On the basis of the structure of amylose,
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Answer #1

Amylose reacts with iodine to form starch - tried iodide complex which give deep blue in colour. This color is due to formation of starch iodine complex.

Fehling's test is used to determine the reducing sugar. Thus all reducing monosaccharide sugars give positive fehling's test. All poly sachharides are non reducing in nature. Hence they give negative results for amylose.amylose has only one reducing end. Hence it is non detectable as the concentration is too low. Thus Thus negative test.

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