Download App

8.1. Aldehydes and ketones — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
When acetaldehyde is heated with Fehling solution, it gives a red precipitate of 
  • A
    $Cu$
  • B
    $CuO$
  • ✓
    $C{u_2}O$
  • D
    $Cu{(OH)_2}$
✓

Answer

Correct option: C.
$C{u_2}O$
c
(c) $C{H_3}CHO + \underbrace {2C{u^{ + 2}} + 5O{H^ - }}_{{\text{Fehling solution}}} \to C{H_3}CO{O^ - } + \mathop {C{u_2}O}\limits_{{\text{Red ppt}}{\text{.}}} + 3{H_2}O$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 8.1. Aldehydes and ketones→8.1. Aldehydes and ketones — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which blue-liquid is obtained on reacting equimolar amounts of two gases at $-30\,^oC$ ?
→
The correct order of increasing basic nature for the bases NH3​, CH3​NH2​ and (CH3​)2​NH is?
→
The electronic configuration of central metal atom/ion in $\left[ Co ( CN )_{6}\right]^{3-}$ is
→
Which of the following does not form a stable hydrate on addition of $H_2O$ ?
→
The reactivities of methyl chloride, propyl chloride and chlorobenzene are in the order
→
When $CH_3-CH_2-COOH$ is reduced with $LiAlH_4$, the compound obtained will be
→
Which of the following polymerisation isomers of the compound having empirical formula $Cr(NH_3)_3(NO_2)_3$ has the lowest molecular mass ?
→
The order of solubility of alkanols in water is
→
Assertion : Europium $(II)$ is more stable than cerium $(II)$.

Reason : Cerium salts are used as catalyst in petroleum cracking.

→
Acid catalyzed hydration of alkenes except ethene leads to the formation of
→