Download App

8.3. Organic chemistry purification and characterization — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry8.3. Organic chemistry purification and characterization1 Mark
MCQ
The correct match between items $I$ and $II$ is
Item $-I$ (Mixture) Item $-II$ (Separation method)
$(a)$ $H_2O :$ Sugar $p.$ Sublimation
$(b)$ $H_2O :$ Aniline $q.$ Recrystallization
$(c)$ $H_2O :$ Toluene $r.$ Stem distillation
  $s.$ Differential extraction
  • A
    $a - d, b -r, c -p$
  • ✓
    $a -q, b -r, c -s$
  • C
    $a -r, b -p, c -s$
  • D
    $a -q, b -r, c -p$
✓

Answer

Correct option: B.
$a -q, b -r, c -s$
b
(mixture) $\quad\quad\quad\quad$ (seperation method)

$H _2 O : \text { Sugar } \Rightarrow \text { Recrystallization }$

$H _2 O : \text { Aniline } \Rightarrow \text { Steam distillation }$

$H _2 O \text { : Toluene } \Rightarrow \text { Differential extraction }$

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 8.3. Organic chemistry purification and characterization→8.3. Organic chemistry purification and characterization — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The $\pi  - $ bond between $Cl-O$ in $ClO_4^ -$ is formed by the overlapping of ______ orbitals
→
From the given list, the number of compounds with $+4$ oxidation state of Sulphur__________.

$\mathrm{SO}_3, \mathrm{H}_2 \mathrm{SO}_3, \mathrm{SOCl}_2, \mathrm{SF}_4, \mathrm{BaSO}_4, \mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_7$

→
Which of the following compound is most reactive in electrophilic aromatic substitution?
→
What quantity of ammonium sulphate is necessary for the production of $N{H_3}$ gas sufficient to neutralize a solution containing $292\, g$ of $HCl$?.............. $\mathrm{g}$

$[HCl=36.5; {(N{H_4})_2}S{O_4}=132; N{H_3}=17]$

→
Consider the following reactions:

$(i)$  $H_{(aq)}^+ + OH^-= H_2O_{(l)} ,$   $\Delta H = -X_1\,kJ \,mol^{-1}$

$(ii)$  $H_{2(g)} + \frac{1}{2}O_{2(g)} = H_2O_{(l)},$   $\Delta H = -X_2\,kJ \,mol^{-1}$

$(iii)$  $CO_{2(g)} + H_{2(g)} = CO_{(g)} + H_2O_{(l)},$   $\Delta H = -X_3\, kJ\, mol^{-1}$

$(iv)$  $ C_2H_{2(g)}+  \frac{5}{2} O_{2(g)} = 2CO_{2(g)} + H_2O_{(l)},$   $\Delta H = -X_4\,kJ \,mol^{-1}$

Enthalpy of formation of $H_2O_{(l)}$ is

→
Which alkyne will give $3$ -ethylhexane on catalytic hydrogenation ?
→
Lattice enthalpy and enthalpy of solution of $NaCl$ are $788\, kJ mol ^{-1}$ and $4\, kJ\, mol ^{-1}$ respectively. The hydration enthalpy of $NaCl$ .......$\, kJ\, mol ^{-1}$
→
The density of a monobasic strong acid (Molar mass $24.2\,g\,mol )$ is $1.21\,kg\,L$. The volume of its solution required for the complete neutralization of $25\,mL$ of $0.24\,M\,NaOH$ is $..............\times 10^{-2}\,mL$ (Nearest integer)
→
The oxidation number of carbon in $C{H_2}C{l_2}$ is
→
Which of the following sets of atomic numbers corresponds to elements of group $16$ ?
→