Question

After adding caustic soda and copper sulphate into milk then milk's colour changes to violet why does it change

Answer 1

Explanation:

If protein is present in the food item the colour of the sample changes to violet. As Milk contains protein, it turns violet when reacted with Copper Sulphate and caustic soda solution.

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Answer 2

Answer:

If protein is present in the food item the colour of the sample changes to violet. As Milk contains protein, it turns violet when reacted with Copper Sulphate and caustic soda solution.

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