Download App

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

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
Assertion : $2, 2-$ Dimethylpropanal undergoes Cannizzaro reaction with conc. $NaOH$.
Reason : Cannizzaro reaction is a disproportionation reaction
  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • ✓
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.
✓

Answer

Correct option: B.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
b
Aldehydes which do not contain $\alpha  - $ hydrogen undergo Cannizzaro reaction

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→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The word Argon means $.......$
→
Which has the lowest boiling point
→
Pair of compounds which is planar:
→
Liquid $‘M’$ and liquid $‘N’$ form an ideal solution. The vapour pressures of pure liquids $‘M’$ and $‘N’$ are $450$ and $700\,mmHg,$ respectively at the same temperature. Then correct statement is:
( $x_M =$ mole fraction of $‘M’$ in solution; $x_N =$ mole fraction of $‘N’$ in solution;
$y_M =$ mole fraction of $‘M’$ in vapour phase; $y_N =$ mole fraction of $‘M’$ in vapour phase)
→
Insulin is
→
In the following monobromination reaction, the number of possible chiral products is
→
The specific conductance of a $0.1\,\,N \,KCl$ solution at ${23\,^o}C$ is $0.012\,\,oh{m^{ - 1\,}}\,c{m^{ - 1}}$. The resistance of cell containing the solution at the same temperature was found to be $55\,ohm$. The cell constant will be .............. $\mathrm{cm}^{-1}$
→
For a certain reaction, $10\%$ of the reactant dissociates in $1\, hour$, $20\%$ of the reactant dissociate in $2\, hour$, $30\%$ of the reactant dissociates in $3\, hour$. Then the units of rate constant is
→
The bond dissociation energy is highest for
→
Phenol, when it first reacts with concentrated sulphuric acid and then concentrated nitric acid gives
→