SarkariPYQ

SSC GD 2019 PYQ — Question 29

SSC GD Constable (English) - 13 Feb 2019 Shift 3 • General Awareness • Q29

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A solution of which of the following is needed to test the presence of proteins?

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Correct answer: A

Explanation

The correct answer is option 1 i.e. Copper sulphate and caustic soda solution.

  • A solution of copper sulphate and caustic soda solution is needed to test the presence of proteins.

  • Biuret test: The compounds with peptide linkage undergo this test.

  • Proteins are polypeptides of amino acids linked together by peptide bonds.

  • Formation of violet colouration confirms the presence of Proteins.