List of top Chemistry Questions on Conductance of Electrolytic Solutions asked in JEE Main

At 298 K, the molar conductivity of $x% \ (w/w)$ MX solution (aqueous) is 123.5 S cm$^2$ mol$^{-1}$. The conductance of same solution is $1.9 \times 10^{-3}$ S. The value of $x$ is ______ $\times 10^{-2}$.
(Given : cell constant $= 1.3 \text{ cm}^{-1}$; molar mass of MX is 75 g mol$^{-1}$, density of aqueous solution of MX at 298 K is 1.0 g mL$^{-1}$)}

Given below are two statements: 
Statement I: Benzene is nitrated to give nitrobenzene, which on further treatment with \( \text{CH}_3\text{COCl} / \text{AlCl}_3 \) will give the product shown. 

Statement II: \( -\text{NO}_2 \) group is a meta-directing and deactivating group. 
In the light of the above statements, choose the most appropriate answer from the options given below.

The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is expected to be observed?
The molar conductivities of a divalent cation (M2+) and monovalent anion (A-) are 57 S cm-1 mol-1 and 73 S cm-1 mol-1 respectively. Then find the total molar conductivity shown by their compound in S cm-1 mol-1