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Silver articles become black on prolonged exposure to air. This is due to the formation of
A$\mathrm{Ag}_3\mathrm{N}$
B$\mathrm{Ag}_2\mathrm{S}$
C$\mathrm{Ag}_2\mathrm{O}$
D$\mathrm{Ag}_3\mathrm{S}$ and $\mathrm{Ag}_3\mathrm{N}$
Answer & Solution
Correct answer: B. $\mathrm{Ag}_2\mathrm{S}$
This Metals and Non-metals item tests a core Chemistry concept.
Correct answer: $\mathrm{Ag}_2\mathrm{S}$.
_Source: NCERT Exemplar Science Class 10 (NCERT)_
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