Question

N. A gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds

Answer 1

The answer is tear gas. ⛽️ The chemical formula is  2-chlorobenzalmalononitrile. But, high exposure can cause  Tear gas works by irritating the eyes, nose, mouth, and lungs. Typically symptoms include a burning, watery eyes, difficulty breathing, chest pain and skin irritation. It can also cause temporary blindness.