What nutrient does the Benedict's test detect?

Reducing sugars

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What colour change occurs in a positive Benedict's test?

Blue to green, yellow, orange or brick red

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What nutrient does the iodine test detect?

Starch

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What colour change occurs in a positive iodine test?

Yellow-orange to blue-black

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What nutrient does the biuret test detect?

Protein

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What colour change occurs in a positive biuret test?

Blue to purple

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