Which of the following materials falls under the category of Toxic and Infectious substances?

• A. Household cleaners
• B. Pesticides
• C. Food items
• D. Papers

Answer: (B)

Pesticides are classified as toxic and infectious substances because they contain chemicals designed to kill or control pests, which can pose health risks to humans, animals, and the environment if mishandled. These substances can be harmful if ingested, inhaled, or if they come into contact with skin, and certain pesticides may also exhibit infectious properties if they contain pathogens.

In contrast, household cleaners, while they may contain harsh chemicals, are typically not classified as toxic in the same regulatory sense as pesticides. Food items do not fall under this category, as they are meant for consumption and are regulated for safety to ensure they are non-toxic. Papers, like those used for printing or writing, are generally considered safe and not toxic or infectious. Thus, the selection of pesticides as the correct choice highlights the specific risks associated with substances that can be dangerous in a variety of situations.