Which of the following chemicals may be used as part of a solution to recover serial numbers on a weapon?
A) cupric chloride
B) hydrochloric acid
C) sodium cyanide
D) a and b only
E) a and c only

Question

Quizplus · Accepted Answer

Cupric chloride and hydrochloric acid are commonly used chemicals in the process of recovering serial numbers on a weapon. Sodium cyanide is a toxic substance and not typically used for this purpose. Therefore, choice D is the best answer as it includes the two correct options.

Which of the Following Chemicals May Be Used as Part