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Subjects
Science CBSE
Class 7 New
The World of Metals and Non-metals
Textbook Based Questions
10.
Corrosion and its examples
Exercise condition:
1
m.
Pick
the
best option
for the following question:
Assertion (A)
When iron is exposed to atmospheric air for an extended period of time, it forms a rusty coating.
Reason (R)
This is due to the reaction of iron with air and moisture.
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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