A trailer already contains dry silver cyanide. May cartons of battery acid be added to the same load?
Correct answer: D – No, these materials must not be loaded together
The New Jersey manual’s Do Not Load Table identifies silver cyanide as a cyanide that must be kept away from acids and acidic materials. Battery acid and silver cyanide must not share the vehicle because contact could generate hydrogen cyanide. Federal hazardous-materials rules prohibit loading, storing, or transporting cyanides with acids when their mixture would produce hydrogen cyanide.
Source: New Jersey Commercial Driver License Manual — § 9.4, “Loading and Unloading”, 49 CFR § 177.848(c) – Segregation of hazardous materials

