question number 25

Dear Student,

Proteins can be tested using the biuret reagent test. In this a mixture of NaOH (Caustic soda) and CuSo4 are used to test the proteins. Cu ions binds to the proteins and it gives a purple color to the solution, hence confirming the presence of proteins.

Therefore, option 'a' is correct.



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Caustic soda is used to test the presence of starch .
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Protein
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Protein
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