Download App

1. Solution and colligative properties — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry1. Solution and colligative properties1 Mark
MCQ
The molality of a solution is
  • A
    Number of moles of solute per $1000\,ml$ of the solvent
  • ✓
    Number of moles of solute per $1000\,gm$ of the solvent
  • C
    Number of moles of solute per $1000\,ml$ of the solution
  • D
    Number of gram equivalents of solute per $1000\,ml$ of the solution
✓

Answer

Correct option: B.
Number of moles of solute per $1000\,gm$ of the solvent
b
It’s Obvious.

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 1. Solution and colligative properties→1. Solution and colligative properties — all question types→Chemistry STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

For the reaction

$2H_2 + 2NO \to N_2 + 2H_2O$

the following mechanism has been proposed

$(i)$  $2NO \rightleftharpoons N_2O_2\,$   (fast)

$(ii)$ $N_2O_2 + H_2 \xrightarrow{{{k_2}}} N_2O + H_2O\,$    (slow)

$(iii)$  $N_2O + H_2 \to N_2 + H_2O\,$   (fast)

then what will be the rate law of this reaction ?

→
$13.44\, g$ of $CuCl_2$ is dissolved in $1\, kg$ of water. Determine the elevation in boiling point of the solution. [$K_b = 0.52\,\, K \,kg\, mol^{-1}$, $mol\, wt$ of $CuCl_2 = 134.1$]
→
Which of the following react with $HBr$ at faster rate ?
→
Formaldehyde is used as formalin in industries:
→
The final product $(III)$ obtained in the reaction sequence 

$C{{H}_{3}}-C{{H}_{2}}-COOH\xrightarrow{PC{{l}_{3}}}I\xrightarrow{{{C}_{6}}{{H}_{6}}/AlC{{l}_{3}}}II\xrightarrow[\text{base/heat}]{N{{H}_{2}}-N{{H}_{2}}}III$

→
Which of the following complex compound exhibits cis-trans isomerism?
→
The effect caused by lanthanoid contraction is :
→
Which of the following reactions are disproportionation reactions?
  1. $ \mathrm{Cu}^{+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{Cu} $
  2. $ 3 \mathrm{MnO}_4{^-}+4 \mathrm{H}^{+} \rightarrow 2 \mathrm{MnO}_4{^-}+\mathrm{MnO}_2+2 \mathrm{H}_2 \mathrm{O} $
  3. $ 2 \mathrm{KMnO}_4 \rightarrow \mathrm{K}_2 \mathrm{MnO}_4+\mathrm{MnO}_2+\mathrm{O}_2 $
  4. $2 \mathrm{MnO}_4{^-}+3 \mathrm{Mn}^{2+}+2 \mathrm{H}_2 \mathrm{O} \rightarrow 5 \mathrm{MnO}_2+4 \mathrm{H}^{+} $
→
Select the best method for the preparation of the following compounds
→
The order of stability of the following tautomeric compounds is

$\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_2} = C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(I)}  \rightleftharpoons $

$\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(II)}  \rightleftharpoons $

$\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C = CH - C - C{H_3}} 
\end{array}}\limits_{(III)} $

→