Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Statues and paintings coated with lead turn black on long exposure to atmosphere. The original colour can be restored by treating them with 
. The reason behing this is.
A
Blackened statues get coated with pbs which on reaction with 
is oxidised to white 
is oxidised to white
B
dissolves the coating of white lead and exposes the inner surface.
C
White lead reacts with 
to form white 
to form white
D
Blackened statues get coated with lead sulphate which reacts with 
to give Pbs.
to give Pbs.
Text Solution
Verified by ExpertsThe correct answer is:
A
: The statues and paintings coated with white lead get blackened due to action of 
present in traces in atmosphere. When these are treated with 
PbS is
Oxidised to 
which is colourless or white
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