The organic compound is taken in a clean test tube and some ammonical silver nitrate solution is added to it. The mixture is then warmed. The formation of a shining silver mirror on the sides of the test tube takes place. This indicates the presence of

Step-by-step solution

Tollens' reagent is a chemical reagent most commonly used to determine whether a known carbonyl-containing compound is an aldehyde or a ketone. It is usually ammonical silver nitrate, but can also be other mixtures, as long as aqueous diamminesilver(I) complex is present. It was named after its discoverer, the German chemist Bernhard Tollens. A positive test with Tollens' reagent results in elemental silver precipitating out of solution, occasionally onto the inner surface of the reaction vessel, producing