The total number of compounds from below when treated with hot KMnO4 giving benzoic acid is:
Hot KMnO4 is a strong oxidizing agent that cleaves alkyl side chains attached to benzene rings, converting the alkyl group into a carboxyl group, thus forming benzoic acid.
In the given compounds, the ones with alkyl groups on the benzene ring will be oxidized to benzoic acid.
The number of such compounds that will undergo this transformation is 5.


In the given figure, the blocks $A$, $B$ and $C$ weigh $4\,\text{kg}$, $6\,\text{kg}$ and $8\,\text{kg}$ respectively. The coefficient of sliding friction between any two surfaces is $0.5$. The force $\vec{F}$ required to slide the block $C$ with constant speed is ___ N.
(Given: $g = 10\,\text{m s}^{-2}$) 
The equivalent resistance between the points \(A\) and \(B\) in the given circuit is \[ \frac{x}{5}\,\Omega. \] Find the value of \(x\). 