Question

food items with do not produce ------------ colour with copper sulphate and cuastic soda solutions do not contain proteins.​

Answer 1

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Food items which do not produce violet colour with copper sulphate and caustic soda solutions do not contain protien.

When there is an alkaline medium the Cu+2 become Cu+ to become violet.

# mark it as the BRAINLIEST

# thank toh kardo

@ Lalitya

Answer 2

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$\tt\implies$Food items which do not produce violet colour with copper sulphate and caustic soda solutions do not contain protien.