Download App

8.2 Carboxylic acids and their derivative — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.2 Carboxylic acids and their derivative1 Mark
MCQ
A carboxylic acid is converted into its anhydride using
  • A
    Thionyl chloride
  • B
    Sulphur chloride
  • C
    Sulphuric acid
  • ✓
    Phosphorus pentoxide
✓

Answer

Correct option: D.
Phosphorus pentoxide
d
${P_2}{O_5}$ acts as a dehydrating agent

$\begin{array}{*{20}{c}}
  {RCOOH} \\ 
  {RCOOH} 
\end{array}\,\xrightarrow{{{P_2}{O_5}}}$ $\begin{array}{*{20}{c}}
  {RCO} \\ 
  {RCO} 
\end{array} > O + {H_2}O$

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

Explore more

More "M.C.Q (1 Marks)" from 8.2 Carboxylic acids and their derivative→8.2 Carboxylic acids and their derivative — all question types→Chemistry STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The correct decreasing order of basic strength of the following species is $........ \mathrm{H}_2 \mathrm{O}, \mathrm{NH}_3, \mathrm{OH}^{-}, \mathrm{NH_2}^{-}$
→
Silver ornaments turn black by the presence of which gas in the atmosphere?
→
Out of the following the best category of proteins is
→
The number of species from the following carrying a single lone pair on central atom Xenon is $.....$: $XeF _5^{+}, XeO _3, XeO _2 F _2, XeF _5^{-}, XeO _3 F _2, XeOF _4$, $XeF _4$
→
Which one of the following is the strongest base in aque­ous solution ?
→
What current strength in amp. will be required to liberate $10\, g$ of chlorine from $NaCl$ solution in one hour ............. $\mathrm{amp}$
→
Conductivity of $0.001\  M$ aq.solution of $Na_2SO_4$ is found to be $2.6 × 10^{-3}\  S\, cm^{-1}$ at $25\,^oC$. If limiting molar conductance of $Na^+$ is $50\  S\, cm^2 \,mol^{-1}$, then limiting molar conductance of $SO_4^{2-}$ will be .............. ${\rm{S}}\,{\rm{c}}{{\rm{m}}^2}{\rm{mo}}{{\rm{l}}^{ - 1}}$ (neglect conductivity of water).
→
Half lives of first order and a zero order reaction are same. Assume that initial concentration of reactant is same for both reactions, then the ratio of initial rates of first order reaction to that of zero order reaction is
→
Which of the following can possibly be used as analgesic without causing addiction and moon modification
→
Variable valency is shown by
→