A) Tollens reagent
B) 2, 4 DNP test
C) Molisch test
D) Mullikans test
Correct Answer: A
Solution :
Key Idea: Define all terms (a) Tollens reagent: It is ammoniacal silver nitrate. The aldehydes reduce it to silver and ketones shows no reaction. It is used to distinguish between aldehydes and ketones. (b) 2, 4 DNP test: Both aldehydes and ketones form orange ppt. with 2, 4 DNP. (c) Molisch test: 1% alcoholic solution of \[\alpha \] naphthol is Molisch reagent. It is used to test carbohydrates in food. Mullikans test: It is done to determine charge on electron \[\therefore \]choice (a) Tollens reagent is used to distinguish between aldehyde and ketones.
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