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Chemistry CBSE Live product
Class 10 (2025-26)
Metals and non-metals
Annual Revision V - Metals and non-metals
4.
Corrosion
Question:
1
m.
Read the following statements and choose the correct option:
Assertion (A)
Silver objects turn black when they are exposed to air for a long time.
Reason (R)
When silver reacts with oxygen in the air, a silver oxide coating is formed.
Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
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