What is the quantity of electricity required to produce $8$ g of Mg (molar mass = $24\ \text{g mol}^{-1}$) from $\text{MgCl}_2$ solution ?

What is the molar conductivity of $0.02$ M KI solution if its conductivity is $4.37 \times 10^{-4}\,\Omega^{-1}\,\text{cm}^{-1}$ ?

Identify correct statement regarding order of reaction from following.

Calculate rate constant of a first order reaction having half life $1$ minute $40$ second?