Which of the following is an organic compound with the formula C₆H₄Cl₂ that is used as a fumigant insecticide to control cloth moths?

para-dichlorobenzene

The correct answer is option 1. para-dichlorobenzene.

para-dichlorobenzene, also known as p-dichlorobenzene, is an organic compound with the chemical formula \(C_6H_4Cl_2\). It is used as a fumigant insecticide to control cloth moths, as well as to deodorize and disinfect areas such as bathrooms and garbage bins.