Aromatic Aldehydes Ketones and Acids - Result Question 20
####24. Positive Tollen’s test is observed for
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 24. False
Solution:
- $R CHO+\quad Ag _2 O \quad \stackrel{OH^{-}}{\longrightarrow} R COOH+2 Ag$
$$ \begin{array}{ll} \text { (Tollen’s reagent) } & \text { Silver mirror } \end{array} $$
Tollen’s test is given by all aldehydes and all reducing sugars as glucose, fructose and $\alpha$-hydroxy ketones.
Aldehyde
(c)
$\alpha$-hydroxy ketone give positive Tollen’s test.
