pH value of 0.001 M NaOH solution is ____________.

Number of alkanes obtained on electrolysis of a mixture of $\mathrm{CH}_3 \mathrm{COONa}$ and $\mathrm{C}_2 \mathrm{H}_5 \mathrm{COONa}$ is ________.

On reaction with stronger oxidizing agent like $\mathrm{KIO}_{4}$, hydrogen peroxide oxidizes with the evolution of $\mathrm{O}_{2}$. The oxidation number of in changes to __________.

A dilute solution of sulphuric acid is electrolysed using a current of 0.10 A for 2 hours to produce hydrogen and oxygen gas. The total volume of gases produced a STP is _____________ cm³. (Nearest integer)

[Given : Faraday constant F = 96500 C mol^$-$1 at STP, molar volume of an ideal gas is 22.7 L mol^$-$1]

A solution of Fe₂(SO₄)₃ is electrolyzed for 'x' min with a current of 1.5 A to deposit 0.3482 g of Fe. The value of x is ___________. [nearest integer]

Given : 1 F = 96500 C mol^$-$1

Atomic mass of Fe = 56 g mol^$-$1

The resistance of a conductivity cell containing 0.01 M KCl solution at 298 K is 1750 $\Omega$. If the conductivity of 0.01 M KCl solution at 298 K is 0.152 $\times$ 10^$-$3 S cm cm.

The amount of charge in $\mathrm{F}$ (Faraday) required to obtain one mole of iron from $\mathrm{Fe}_{3} \mathrm{O}_{4}$ is ___________. (Nearest Integer)

Resistance of a conductivity cell (cell constant $129 \mathrm{~m}^{-1}$) filled with $74.5 \,\mathrm{ppm}$ solution of is (labelled as solution 1). When the same cell is filled with solution of , the resistance is (labelled as solution 2). The ratio of molar conductivity of solution 1 and solution 2 is i.e. . The value of is __________. (Nearest integer)

The specific conductance of $0.0025 ~\mathrm{M}$ acetic acid is $5 \times 10^{-5} \mathrm{~S} \mathrm{~cm}^{-1}$ at a certain temperature. The dissociation constant of acetic acid is __________ (Nearest integer)