Question

A girl observe a blackish layer on a newly brought silver anklets after 2 month .A gas responsible for this reaction is
A. Carbon dioxide B. Sulphur
C. Oxygen D. Nitrogen dioxide

Answer 1

Answer:

sulphur

Explanation:

1. When silver comes in contact with the sulphur gas ( a gas present in air) , a chemical reaction takes place which led to the formation of silver sulphide. Thus a black layer on the silver metal is formed.
2. This oxidation of silver is also a sign that it is really silver metal.

thus a blackish layer formed on the newly brought anklets after 2 months.