1.

Two tubes labelled 'P' and 'Q' contain food stuff. Tube 'P' gave positive test with Benedict's solution while tube 'Q' gave positive test with Nitric acid. Which of the following is correct ?(A)  Tube 'P' contains sugar; tube 'Q' contains protein  (B)  Tube 'P' contains protein; tube 'Q' contains sugar  (C)  Both, tube 'P' and tube 'Q' contain sugar(D)  Both, tube 'P' and tube 'Q' contain protein 

Answer»

Correct option  (A) Tube 'P' contains sugar; tube 'Q' contains protein 

Explanation:

→ Nitric acid reacts with proteins to form yellow nitrated products

 → Benedict test is used to test the presence of monosaccharide and reducing sugar. 



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