MCQ
Tischenko reaction yields ester in the presence of catalyst which is
  • A
    $LiAl{H_4}$
  • B
    $N-$ bromosuccinamide
  • $Al{(O{C_2}{H_5})_3}$
  • D
    $Zn - Hg/HCl$

Answer

Correct option: C.
$Al{(O{C_2}{H_5})_3}$
c
(c)$2C{H_3}CHO\xrightarrow{{Al{{(O{C_2}{H_5})}_3}}}C{H_3}C{H_2}OH$    $ + C{H_3}COOH$   $ \to \mathop {C{H_3}COO{C_2}{H_5}}\limits_{{\text{Ethyl}}\,\,\,{\kern 1pt} {\text{acetate}}}  + {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

Similar questions

The dissociation constant of acetic is $x \times 10^{-5}$. When $25 mL$ of $0.2\,M\,CH COO _3 COO$ solution is mixed with $25\,mL$ of $0.02\,M\,CH { }_3 COOH$ solution, the $pH$ of the resultant solution is found to be equal to 5 . The value of $x$ is $..........$.
In the reaction sequence $CH _{2}= CH _{2}$ $\xrightarrow[{{\text{acid}}}]{{{\text{Hypochlorgys}}}}X\xrightarrow{Y}$ $\begin{array}{*{20}{c}}
  {C{H_2}OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2}OH} 
\end{array}$

$X$ and $Y$ respectively are:

 

Which of the following reaction does not give primary amine as a product ?
Standard molar enthalpy of formation of $C{O_2}$ is equal to
The activation energy of one of the reactions in a biochemical process is $532611\, J\,  mol ^{-1}$. When the temperature falls from $310 \, K$ to $300\,  K$, the change in rate constant observed is $k _{300}= x \times 10^{-3}\,  k _{310}$. The value of $x$ is $.....$ [Given: $\ln 10=2.3$

$R =8.3\,  J \, K ^{-1}\,  mol ^{-1}$

The cell reaction $Cu + 2A{g^ + } \to C{u^{ + 2}} + Ag$ is best represented by
The electrons identified by quantum numbers $n$ and $l$ $(i)$ $n = 4,\,l = 1$ $(ii)$ $n = 4,\,l = 0$ $(iii)$ $n = 3,\,l = 2$ $(iv)$ $n = 3,\,l = 1$ can be placed in order of increasing energy from the lowest to highest, as
What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid
Two solution labelled as $3\,M\,HCl$ and $1\,M\,HCl$ are mixed in the ratio of $x : y$ by volume and the molarity of resulting solution is $1.5\,M$. ....... $M$ the molarity of the resulting solution if they are mixed in the ratio $y : x$ by volume.
Given below are two statements: One is labelled as $A$ssertion $A$ and the other is labelled as $R$eason $R$:

Assertion $A$: $\mathrm{pK}_{\mathrm{a}}$ value of phenol is $10.0$ while that of ethanol is $15.9$.

Reason $R$: Ethanol is stronger acid than phenol.In the light of the above statements, choose the correct answer from the options given below: