Which statement is false regarding nerve agents' vaporization?

• A. Nerve agents vaporize readily due to high vapor pressure
• B. Nerve agents are a type of chemical warfare agent
• C. Nerve agents were designed to harm people
• D. Nerve agents are examples including sarin, soman, and VX

Answer: (A)

Vaporization is all about how easily a substance forms a vapor at a given temperature, which is described by its vapor pressure. A high vapor pressure means a substance tends to evaporate readily, creating hazardous vapors. But nerve agents don’t all share the same volatility—they vary from highly volatile to quite non-volatile. Some can form dangerous vapors, but others remain as liquids on surfaces for long periods and don’t vaporize quickly. So saying that nerve agents vaporize readily because they have high vapor pressure overgeneralizes their behavior across the whole class. The true statements are that nerve agents are a type of chemical warfare agent, they were designed to harm people, and examples include sarin, soman, and VX.