How does OC spray differ chemically from CS tear gas, and what is the typical onset of OC effects?

• A. OC is a capsaicinoid-based oil-soluble irritant; tear gases are volatile irritants; OC effects typically onset within seconds to minutes
• B. OC is a water-based irritant; tear gases are non-volatile
• C. OC is volatile; tear gas is oil-soluble; OC effects begin after a day
• D. OC has no onset difference from CS tear gas

Answer: (A)

The main idea here is the chemical nature of the irritants and how that affects onset. OC spray uses capsaicinoids—the spicy compounds from chili peppers—which are oil-soluble irritants. Tear gases like CS are volatile irritants that form vapors. Because OC is oil-soluble, it readily adheres to mucous membranes and skin and acts quickly on the nerve receptors that produce burning and tearing, so you typically see effects within seconds to minutes after exposure. The other statements mix up the chemistry (OC as water-based or volatile, or CS as oil-soluble) and don’t match how OC behaves, so the best description is that OC is capsaicinoid-based and oil-soluble, with effects onset in seconds to minutes.