Find the IUPAC name of the compound.

The given compound is a substituted benzoic acid. We need to identify the positions of the substituents and name the compound according to the IUPAC rules. - The parent structure is benzoic acid, with a carboxyl group (-COOH) at position
1. - The other substituents are: - A bromine (Br) group attached at position
2. - A nitro (NO\(_2\)) group attached at position 3. Thus, the correct IUPAC name for this compound is 2-Bromo-3-nitrobenzoic acid.
The compound with molecular formula C\(_6\)H\(_6\), which gives only one monobromo derivative and takes up four moles of hydrogen per mole for complete hydrogenation has ___ \(\pi\) electrons.
Designate whether each of the following compounds is aromatic or not aromatic.

Conc. HNO\(_3\)
If $ \theta \in [-2\pi,\ 2\pi] $, then the number of solutions of $$ 2\sqrt{2} \cos^2\theta + (2 - \sqrt{6}) \cos\theta - \sqrt{3} = 0 $$ is:
A thin transparent film with refractive index 1.4 is held on a circular ring of radius 1.8 cm. The fluid in the film evaporates such that transmission through the film at wavelength 560 nm goes to a minimum every 12 seconds. Assuming that the film is flat on its two sides, the rate of evaporation is:
The major product (A) formed in the following reaction sequence is
