Which agent has the texture of motor oil, making it especially dangerous as it can remain in the environment for long periods?

Which agent has the texture of motor oil, making it especially dangerous as it can remain in the environment for long periods?

• A. Sarin
• B. VX
• C. Mustard Gas
• D. Tabun

Answer: (B)

The behavior described points to an agent that is a thick, oily liquid with very low volatility, so it sticks around in the environment for a long time. VX fits this description perfectly: it has a motor-oil–like consistency, is lipophilic, and degrades slowly in many environments, which means it can linger on surfaces, soil, and equipment for extended periods and pose ongoing exposure risks. By contrast, sarin evaporates quickly and doesn’t persist, tabun is less persistent than VX, and mustard gas, while also persistent in some conditions, is defined more by its blistering effects than this oily, long-lasting texture.

The behavior described points to an agent that is a thick, oily liquid with very low volatility, so it sticks around in the environment for a long time. VX fits this description perfectly: it has a motor-oil–like consistency, is lipophilic, and degrades slowly in many environments, which means it can linger on surfaces, soil, and equipment for extended periods and pose ongoing exposure risks. By contrast, sarin evaporates quickly and doesn’t persist, tabun is less persistent than VX, and mustard gas, while also persistent in some conditions, is defined more by its blistering effects than this oily, long-lasting texture.