The action of $AlCl_3$ in Friedel-Crafts reaction is

What is the ratio of glyoxal to pyrualdehyde obtained in the ozonolysis of $o-xylene$ as shown in the reaction below?
$o-Xylene$ $\xrightarrow[{(2) Zn}]{{(1) O_3}} CHO-CHO \text{ (Glyoxal)} + CH_3CO-COCH_3 \text{ (2,3-Butanedione)} + CH_3CO-CHO \text{ (Pyrualdehyde)}$

Determine the number of aromatic compounds in the given set of compounds.

Cyclic hydrocarbon molecule $A$ has all the carbon and hydrogen atoms in a single plane. All the carbon-carbon bonds are of the same length and are less than $1.54 \ \mathring{A}$ but more than $1.34 \ \mathring{A}$. The $C-C-C$ bond angle will be:

The correct order of the rate of $EAS$ (electrophilic aromatic substitution) for the given compounds is:

In the reaction of benzene with dichloromethane $(CH_2Cl_2)$ in the presence of anhydrous $AlCl_3$,the intermediate product '$A$' is: