The osmotic pressure of blood is $7.47$ bar at $300 \mathrm{K}$. To inject glucose to a patient intravenously, it has to be isotonic with blood. The concentration of glucose solution in ${\mathrm{gL}}^{-1}$ is (Molar mass of glucose $=180 \mathrm{g}{ \mathrm{mol}}^{-1}$, $\mathrm{R}=0.083 {\mathrm{Lbar}}^{-1}{ \mathrm{mol}}^{-1}$) (Nearest integer)

A company dissolves '$\mathrm{x}$' amount of ${\mathrm{CO}}_2$ at $298 \mathrm{K}$ in $1$ litre of water to prepare soda water. $\mathrm{x}=.......\times {10}^{-3} \mathrm{g}$. (nearest integer)

(Given: partial pressure of ${\mathrm{CO}}_2$ at $298 \mathrm{K}=0.835$ bar. Henry's law constant for ${\mathrm{CO}}_2$ at $298 \mathrm{K}=1.67 \mathrm{kbar}$. Atomic mass of $\mathrm{H},\mathrm{C}$ and $\mathrm{O}$ is $1,12$, and $6 \mathrm{g}{ \mathrm{mol}}^{-1}$, respectively)

Solute A associates in water. When $0.7 \mathrm{g}$ of solute $\mathrm{A}$ is dissolved in $42.0 \mathrm{g}$ of water, it depresses the freezing point by $0.2 °\mathrm{C}$. The percentage association of solute $\mathrm{A}$ in water, is

[Given: Molar mass of $\mathrm{A}=93 \mathrm{g}{ \mathrm{mol}}^{-1}$. Molal depression constant of water is $1.86 \mathrm{K} \mathrm{kg}{ \mathrm{mol}}^{-1}$]

Given below are two statements : one is labelled as Assertion and the other is labelled as Reason.

Assertion: At $10 °\mathrm{C}$, the density of a $5 \mathrm{M}$ solution of $\mathrm{KCl}$ [atomic masses of $\mathrm{K} \& \mathrm{Cl}$ are $39 \& 35.5 \mathrm{g}{ \mathrm{mol}}^{-1}$ respectively], is '$\mathrm{x}$' ${\mathrm{gml}}^{-1}$. The solution is cooled to $-21 °\mathrm{C}$. The molality of the solution will remain unchanged.

Reason: The molality of a solution does not change with temperature as mass remains unaffected with temperature.

In the light of the above statements, choose the correct answer from the options given below.