What is the main reason silver articles turn black when exposed to air for a long time?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) Formation of silver oxide by reaction with oxygen
2. (B) Accumulation of dust particles on the surface
3. (C) Formation of a silver sulphide coating
4. (D) Formation of silver chloride by reaction with chlorine in air

Verified Answer

Option (C): Formation of a silver sulphide coating

Practice complete mock tests for SSC, Banking & Railway exams at https://testx.in/questions/01a0bfd6-6399-76e6-b49b-210936a75cab/what-is-the-main-reason-silver