Molarity $(\mathrm{M})$ of an aqueous solution containing $x \mathrm{~g}$ of anhyd. $\mathrm{CuSO}_4$ in solution at is . Its molality will be _________ . (nearest integer). [Given density of the solution ]

If $50 \mathrm{~mL}$ of $0.5 \mathrm{M}$ oxalic acid is required to neutralise $25 \mathrm{~mL}$ of solution, the amount of in of given solution is ______ g.

The molality of a $10 \%(\mathrm{v} / \mathrm{v})$ solution of di-bromine solution in $\mathrm{CCl}_{4}$ (carbon tetrachloride) is ''. ____________ . (Nearest integer)

$0.05 \mathrm{~cm}$ thick coating of silver is deposited on a plate of $0.05 \mathrm{~m}^2$ area. The number of silver atoms deposited on plate are ________ . (At mass )

$20 \mathrm{~mL}$ of $0.02 \,\mathrm{M} \,\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ solution is used for the titration of of solution in the acidic medium.

A solution of $\mathrm{H}_2 \mathrm{SO}_4$ is by mass and has a density of . The molarity of the solution is _________ (nearest integer)

In sulphur estimation, 0.471 g of an organic compound gave 1.4439 g of barium sulphate. The percentage of sulphur in the compound is ____________ (Nearest Integer)

(Given : Atomic mass Ba: 137 u, S: 32 u, O: 16 u)

$20 \mathrm{~mL}$ of calcium hydroxide was consumed when it was reacted with $10 \mathrm{~mL}$ of unknown solution of $\mathrm{H}_{2} \mathrm{SO}_{4}$. Also standard solution of containing 2 drops of phenolphthalein was titrated with calcium hydroxide, the mixture showed pink colour when burette displayed the value of whereas the burette showed initially. The concentration of is _____________ M. (Nearest integer)

From $6.55 \mathrm{~g}$ of aniline, the maximum amount of acetanilide that can be prepared will be ________ $\times 10^{-1} \mathrm{~g}$.

The strength of 50 volume solution of hydrogen peroxide is ______ $\mathrm{g} / \mathrm{L}$ (Nearest integer).

The mass of sodium acetate $\left(\mathrm{CH}_3 \mathrm{COONa}\right)$ required to prepare $250 \mathrm{~mL}$ of aqueous solution is ________ g. (Molar mass of is )

The molarity of $1 \mathrm{~L}$ orthophosphoric acid $\left(\mathrm{H}_3 \mathrm{PO}_4\right)$ having purity by weight (specific gravity ) is __________ .

A solution of sugar is obtained by mixing $200 \mathrm{~g}$ of its $25 \%$ solution and $500 \mathrm{~g}$ of its solution (both by mass). The mass percentage of the resulting sugar solution is ___________ (Nearest integer)

Molar mass of the salt from $\mathrm{NaBr}, \mathrm{NaNO}_3, \mathrm{KI}$ and which does not evolve coloured vapours on heating with concentrated is ________ .

A sample of 4.5 mg of an unknown monohydric alcohol, R-OH was added to methylmagnesium iodide. A gas is evolved and is collected and its volume measured to be 3.1 mL. The molecular weight of the unknown alcohol is __________ g/mol. [Nearest integer]