MCQ
On heating glycerol with conc. ${H_2}S{O_4},$ a compound is obtained which has a bad odour. The compound is
- AGlycerol sulphate
- ✓Acrolein
- CFormic acid
- DAllyl alcohol
✓
Answer
Correct option: B.
Acrolein
b
(b) $\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,C{H_2} - OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}} \\
{CH - OH\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,C{H_2} - OH}
\end{array}\mathop {\xrightarrow{{{\text{conc}}{\text{.}}}}}\limits_{{H_2}S{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_2}} \\
{||\,\,\,\,\,\,}
\end{array}} \\
{CH} \\
{|\,\,\,\,\,\,} \\
{\,\,CHO}
\end{array}}\limits_{Acrolein} + 2{H_2}O$
(b) $\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,C{H_2} - OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}} \\
{CH - OH\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,C{H_2} - OH}
\end{array}\mathop {\xrightarrow{{{\text{conc}}{\text{.}}}}}\limits_{{H_2}S{O_4}} $ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_2}} \\
{||\,\,\,\,\,\,}
\end{array}} \\
{CH} \\
{|\,\,\,\,\,\,} \\
{\,\,CHO}
\end{array}}\limits_{Acrolein} + 2{H_2}O$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the given reaction
→$\begin{array}{*{20}{c}}
{C{H_3} - CH - C{H_2} - C{H_2} - CH - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,} \\
{\,\,OTs\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OTs}
\end{array}\xrightarrow[{(ii)\,KOH}]{{(i)\mathop {\,S}\limits^ \ominus H\,(one\,\,equivalent)}}[X]$
$[X]$ will be :
Which of the following pairs is/are correctly matched?
→| Reaction | Product | |
| $I$ | $RX + AgCN$ | $RNC$ |
| $II$ | $RX + KCN$ | $RCN$ |
| $III$ | $RX + KNO_2$ | (image) |
| $IV$ | $RX + AgNO_2$ | $R-O-N = O$ |
Which one of the following orders of acid strength is correct
$\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{CH = O\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}} \\
{{{(CH - OH)}_4}} \\
{\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} - OH}
\end{array}$ $\xrightarrow{{B{r_2}/{H_2}O}}P$ ; $P$ is
→{\begin{array}{*{20}{c}}
{CH = O\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}} \\
{{{(CH - OH)}_4}} \\
{\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} - OH}
\end{array}$ $\xrightarrow{{B{r_2}/{H_2}O}}P$ ; $P$ is
When aluminium phosphide is treated with dil. sulphuric acid
Which of the following reaction will not give aldehyde as major product
The correct corresponding order of names of four aldoses with configuration given below respectively, is
Example of vinylic halide is
Correct increasing order of spin magnetic moment (in $B.M.$) for complexes for
→$(I) [FeF_6]^{-3}$
$(II) [V(H_2O)_6]^{+2}$
$(III) [Fe(H_2O)_6]^{+2}$
The appropriate reagent for the transformation
