MCQ
For a very diluted solution preferred concentration unit is
- APercentage of mass
- BMolarity
- ✓Parts per million
- DMolality
✓
Answer
Correct option: C.
Parts per million
c
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
Correct acidic nature is
Assertion : Reaction of $SO_2$ and $H_2S$ in the presence of $Fe_2O_3$ catalyst gives elemental sulphur.
→Reason : $SO_2$ is a reducing agent
An unsaturated hydrocarbon $X$ absorbs two hydrogen molecules on catalytic hydrogenation, and also gives following reaction :
→$\mathrm{X} \xrightarrow[Zn/H_2O]{O_3}\mathrm{A} \xrightarrow{[Ag(NH_3)_2]^+}$$\mathrm{B}(3-\text {oxo}-\text {hexane dicarboxylic acid})$
$X$ will be
Which of the following reagents will convert propionic acid to $1-$ propanol ?
→The carriers of charge in a metallic conductor are :
Acetone is used:
The colour of liquid ${O_2}$ is
→Which of the following complex will give white precipitate with $BaC{l_2}$ $(aq.)$
→Pure water freezes at $273 \mathrm{~K}$ and $1$ bar. The addition of $34.5 \mathrm{~g}$ of ethanol to $500 \mathrm{~g}$ of water changes the freezing point of the solution. Use the freezing point depression constant of water as $2 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$. The figures shown below represent plots of vapour pressure ($V.P$.) versus temperature ($T$). [molecular weight of ethanol is $46 \mathrm{~g} \mathrm{~mol}^{-1}$ ]
→Among the following, the option representing change the freezing point is
(IMAGE)
In an experiment, $1\,g$ of a non-volatile solute was dissolved in $100\,g $ of acetone (mol. mass $= 58$) at $298\,K$. The vapour pressure of the solution was found to be $192.5\,\,mm\,Hg$. The molecular weight of the solute is (vapour pressure of acetone $= 195\,\,mm\,Hg$)
→