The percentage (by weight) of sodium hydroxide in a $1.25$ molal $NaOH$ solution is (in $\%$)

$A$ solution of glucose in water is labelled as $10 \% \ w/w$. What would be the molality and mole fraction of each component in the solution? If the density of the solution is $1.2 \ g \ mL^{-1}$,then what shall be the molarity of the solution?

What will be the molality of $10\%$ w/w aqueous solution of $NaOH$ (in $m$)? (Molecular mass of $NaOH = 40 \ g \ mol^{-1}$)

$A$ $2.0 \, M$ solution is obtained when $0.5 \, mole$ of solute is dissolved in:

Match List-$I$ with List-$II$.

List-$I$ (Example)	List-$II$ (Type of Solution)
$A$. Humidity	$I$. Solid in solid
$B$. Alloys	$II$. Liquid in gas
$C$. Amalgams	$III$. Solid in gas
$D$. Smoke	$IV$. Liquid in solid

Choose the correct answer from the options given below:

The number of gram molecules of a substance present in unit volume is termed as