CBSE Class 9 Answered
If we add copper sulphate with mik What is the solution?
Asked by V DHANYA Lakshmi | 02 Apr, 2014, 08:00: PM
Expert Answer
Copper ions form a purple complex with the nitrogen from the peptide chain from the milk. The colour changes from light yellow to light purple. This proves the presence of protein in the milk.
Answered by | 03 Apr, 2014, 12:54: PM
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