Which of the following is an inorganic pesticide?

Boric acid is classified as an inorganic pesticide because it is a mineral-based compound, primarily composed of boron. Inorganic pesticides are typically identified by their mineral origin and do not contain carbon-hydrogen bonds that are characteristic of organic compounds. Boric acid is often used for controlling pests such as cockroaches and other insects due to its toxic effects when ingested.

In contrast, Nylar, Malathion, and Tempo are organic compounds. Nylar is an insect growth regulator, Malathion is an organophosphate pesticide, and Tempo is a brand name for a synthetic pyrethroid. These substances are characterized by their carbon-containing structures and are typically more complex than inorganic pesticides. The distinction between inorganic and organic pesticides is essential for understanding their mechanisms of action, safety, and environmental impact.