![Trending Articles on Technical and Non Technical topics](/images/trending_categories.jpeg)
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
When Ag is exposed to air it gets a black coating of
(a)AgNO | (b)Ag2S |
(c)Ag2O | (d)Ag2CO3 |
Correct Answer: (b) Ag2S
Explanation: When Ag is exposed to air it gets a black coating because silver reacts with H2S gas present in the air to form a black coating of Ag2S. The reaction is given below:
$Ag (s) + H_2S (g) → Ag_2S (s) + H_2 (g)$
Advertisements