Which one of the following is also called silver mirror :
Correct answer: C. Tollen's reagent test
- A. Fehling's solution test
- B. Iodoform test
- C. Tollen's reagent test
- D. Benedict's solution test
Explanation
The silver mirror test is a chemical test used to detect the presence of aldehydes in a given sample. It involves the reaction between Tollens' reagent and the aldehyde. Tollens' reagent is a solution of silver nitrate (AgNO3) in aqueous ammonia (NH3). When the aldehyde is present, it undergoes oxidation and reduces the silver ions in Tollens' reagent to metallic silver. This reduction forms a silver mirror on the inner surface of the test tube or flask, giving it a shiny appearance.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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