Download App

7. Alcohol, phenol and ethers — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry7. Alcohol, phenol and ethers1 Mark
MCQ
In the reaction $\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {C{H_2}OH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {CHOH\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2}OH} 
\end{array}$ $+$  $\begin{array}{*{20}{c}}
  {COOH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {COOH} 
\end{array}$ $\xrightarrow{{110\,{\,^o}C}}\,(A)$  product $(A)$ will be
  • ✓
    Glycerol monoformate
  • B
    Allyl alcohol
  • C
    Formaldehyde
  • D
    Acetic acid
✓

Answer

Correct option: A.
Glycerol monoformate
a
$\underset{Glycerol}{\mathop{\begin{matrix}
   \begin{matrix}
   \,\,\,C{{H}_{2}}OH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}  \\
   CHOH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{2}}OH  \\
\end{matrix}}}\,$ $+$ $\underset{Oxalic\,acid}{\mathop{\begin{matrix}
   COOH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   COOH  \\
\end{matrix}}}\,$$\xrightarrow{{110\,{\,^o}C}}$ $\underset{Glycerol\,\,acid\,\,oxalate}{\mathop{\begin{matrix}
   \begin{matrix}
   \,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,O  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,||  \\
   C{{H}_{2}}-O-C-C-OH\,\,  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}  \\
   CHOH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{2}}OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}}}\,$ $\xrightarrow{-\,C{{O}_{2}}}$   $\underset{Glycerol\,\,monoformate}{\mathop{\begin{matrix}
   \begin{matrix}
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{2}}-O-C-OH\,\,\,\,\,\,\,\,\,\,\,  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}  \\
   CHOH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{2}}OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}}}\,$

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 7. Alcohol, phenol and ethers→7. Alcohol, phenol and ethers — all question types→Chemistry STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

During an electrolysis of conc. $H_2SO_4$, perdisulphuric acid ($H_2S_2O_8$) and $O_2$ form at anode in equimolar amount. The mole of $H_2$ that will form simultaneously at other electrode will be (Given : $2H_2SO_4 \rightarrow  H_2S_2O_8 + 2H^+ + 2e^-$)
→
What is not correct about $[Fe(H_2O)_5NO]^{+2}$ ?
→
Corrosion is basically a
→
$\underbrace {\mathop {Hg{I_2}\,}\limits_{'X'} \xrightarrow[{Sublimation}]{\Delta }\,\mathop {Hg{I_2}}\limits_{'Y'} \xrightarrow{{Cooling}}\mathop {Hg{I_2}}\limits_{'Z'} }_{On\,\,rubbing}$
→
At $27^{\circ}\,C$, a solution containing $2.5\,g$ of solute in $250.0\,mL$ of solution exerts an osmotic pressure of $400\,Pa$. The molar mass of the solute is $..............g$ $mol ^{-1}$ (Nearest integer)(Given : $R =0.083\,L\,bar\,K ^{-1}\,mol ^{-1}$ )
→
A reaction takes place in three steps with individual rate constant and activation energy,

  Rate constant Activation energy
Step $1$ $k_1$ $E_{a_1} = 180\,kJ /mol$
Step $2$ $k_2$ $E_{a_2} = 80\,kJ /mol$
Step $3$ $k_3$ $E_{a_3} = 50\,kJ /mol$

overall rate constant, $k = {\left( {\frac{{{k_1}{k_2}}}{{{k_3}}}} \right)^{2/3}}$ overall activation energy of the reaction will be ........ $kJ\,mol$

→
Reaction of    $R-C -NH_2$ with a mixture of $Br_2$ and $KOH$ gives 
                              $||$
                              $O$
 $R -NH_2$ asthe  main product. The intermediates involved in this reaction are :-

$(A)$ $\begin{matrix}
   O\,\,\,\,\,\,\,\,\,\,  \\
   ||\,\,\,\,\,\,\,\,\,\,\,\,  \\
   R-C-NHBr  \\
\end{matrix}$               $(B)$ $R-NH-Br$

$(C)$ $R-N=C=O$                $(D)$ $\begin{matrix}
   \,\,\,\,O\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,  \\
   R-C-NB{{r}_{2}}  \\
\end{matrix}$

→
In a galvanic cell, electrons flow through connecting wires from:
→
$10\,N$ and $\frac{1}{{10}}\,N$ solution is called
→
Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
→