MCQ
This conversion can be achieved by
  • A
    Dehydration, Hydrolysis
  • Retro aldol and further condensation
  • C
    Perkin condensation & Clemmensen reduction
  • D
    Clemmensen and Perkin condensation

Answer

Correct option: B.
Retro aldol and further condensation
b

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

Similar questions

If $5$ moles of an ideal gas expands from $10 \mathrm{~L}$ to a volume of $100 \mathrm{~L}$ at $300 \mathrm{~K}$ under isothermal and reversible condition then work, $w$, is $-x \mathrm{~J}$. The value of $x$ is_____.(Given $\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$ )
The charge on the atom containing $ 17$  protons, $18 $ neutrons and $18  $ electrons is
Mark the smallest atom
The number of pairs of the solution having the same value of the osmotic pressure from the following is

(Assume $100\%$  ionization)

$A.$ $0.500\,M\,C _2 H _5 OH ( aq )$ and $0.25\, M\, KBr ( aq )$

$B.$ $0.100\,M\,K _4\left[ Fe ( CN )_6\right]$ (aq) and $0.100\, M$ $FeSO _4\left( NH _4\right)_2 SO _4$ (aq)

$C.$ $0.05 \,M\, K _4\left[ Fe ( CN )_6\right]( aq )$ and $0.25\, M\, NaCl$ (aq)

$D.$ $0.15\, M\, NaCl ( aq )$ and $0.1\, M BaCl _2$ (aq)

$E.$ $0.02\, M\, KCl\, MgCl _{2 .} 6 H _2 O ( aq )$ and $0.05\, M$ $KCl ( aq )$

The correct order of ligands arranged in increasing field strength.
In a vessel containing $S{O_3},\,S{O_2}$ and ${O_2}$ at equilibrium, some helium gas is introduced so that the total pressure increases while temperature and volume remain constant. According to Le-Chatelier principle the dissociation of $S{O_3}$
The molar conductivity of a solution of a weak acid $HX (0.01\ M )$ is $10$ times smaller than the molar conductivity of a solution of a weak acid $HY (0.10 \ M )$. If $\lambda_{ X }^0 \approx \lambda_{ Y ^{-}}^0$, the difference in their $pK _{ a }$ values, $pK _{ a }( HX )- pK _{ a }( HY )$, is (consider degree of ionization of both acids to be $\ll 1$ )
The prosthetic group of haemoglobin is
‘Lead pencil’ contains
Octet rule is not valid for the molecule