1.

Name the agent responsible for: (a) Offensive odour of rotten eggs. (b) Blackening of an old lead painting. (c) Blackening of silver coin by atmospheric air. [3 MARKS]

Answer» Name the agent responsible for:
(a) Offensive odour of rotten eggs.
(b) Blackening of an old lead painting.
(c) Blackening of silver coin by atmospheric air.
[3 MARKS]


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