Bactericides are used for what purpose?

• A. To kill fungi.
• B. To kill viruses.
• C. To repel insects.
• D. To kill bacteria.

Answer: (D)

Bactericides are substances designed to kill bacteria. This means their primary purpose is to eliminate bacterial cells, whether used to control bacterial diseases in crops or to sanitize surfaces by reducing bacterial contamination. They do not target fungi, viruses, or insects. Fungicides kill fungi, virucides kill viruses, and insecticides or repellents handle insects. So the option describing killing bacteria matches precisely what a bactericide does. Some products might be called bacteriostatic (inhibit growth) in other contexts, but the term bactericide specifically refers to killing bacteria.