Aldehydes Ketones Question 197

Question: Which of the following is used to detect aldehydes

[MHCET 2004]

Options:

A) Million’s test

B) Tollen’s reagent

C) Neutral ferric chloride solution

D) Molisch’s test

Show Answer

Answer:

Correct Answer: B

Solution:

Tollen’s reagent is used to detect aldehydes. Aldehyde reduce Tollen’s reagent to give Silver mirror while these are oxidised to acid. $ \begin{matrix} R \\ H \\ \end{matrix}>C=O+Ag_2O\xrightarrow{{}}RCOOH+\underset{\text{Silver mirror}}{\mathop{2Ag}} $