Which organic compound has formula C₆H₄Cl₂ and is used as a fumigant insecticide for controlling clothes moths?

Explanation

Paradichlorobenzene, or 1,4-dichlorobenzene, has formula C₆H₄Cl₂ and is used in moth-control fumigant products. Its vapour acts on clothes moths. Ethylbenzene, benzoyl chloride and chlorobenzene have different formulas and do not match this identity.