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 a naphthol is Molisch reagent. It is used to test carbohydrates in food. [d] Mullikans test: It is done to determine charge on electron choice [a] Tollens reagent is used to distinguish between aldehyde and ketones.
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