Aldehyde and ketone can be distinguished by: (1) Tollen's reagent (2) Fehling's reagent (3) 2,4 -DNP (4) NaHCO 3

Question

Aldehyde and ketone can be distinguished by: (1) Tollen's reagent (2) Fehling's reagent (3) 2,4 -DNP (4) NaHCO 3 (A) 1, 2 and 3 are correct (B) 1 and 2 are correct (C) 2 and 4 are correct (D) 1 and 3 are correct

Tardigrade Admin · Accepted Answer

Aldehyde gives positive test with Tollen's reagent and Fehling's reagent while ketone's do not give these test.

RC H O + Tollen’s reagent A g_{2} O ⟶ RCOO H + silver mirror 2 A g

RC H O + Fehling’s reagent 2 C u O Δ RCOO H + red ppt.cuprous oxde C u_{2} O

Q. Aldehyde and ketone can be distinguished by : (1) Tollen's reagent (2) Fehling's reagent (3) 2,4 -DNP (4) NaHCO3​

1, 2 and 3 are correct

1 and 2 are correct

2 and 4 are correct

1 and 3 are correct

Aldehyde gives positive test with Tollen's reagent and Fehling's reagent while ketone's do not give these test. RCHO+ Tollen’s reagent Ag2​O​⟶RCOOH+silver mirror2Ag​ RCHO+ Fehling’s reagent2CuO​Δ​RCOOH+red ppt.cuprous oxdeCu2​O​

Q. Aldehyde and ketone can be distinguished by :
(1) Tollen's reagent
(2) Fehling's reagent
(3) $2, 4$ -DNP
(4) $N a H C O_{3}$

Aldehyde gives positive test with Tollen's reagent and Fehling's reagent while ketone's do not give these test.
$RC H O + Tollen’s reagent A g_{2} O ⟶ RCOO H + silver mirror 2 A g$
$RC H O + Fehling’s reagent 2 C u O Δ RCOO H + red ppt.cuprous oxde C u_{2} O$