1. Few children were inflating balloons. 2. Farmers were harvesting crops in their fields.
Among the aforementioned observations, which one is the example of reversible change?
A
Only observation 1 is a reversible change.
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B
Only observation 2 is a reversible change.
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C
Both observation 1 & observation 2 are reversible changes.
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D
Both observation 1 & observation 2 are not reversible changes.
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Solution
The correct option is A Only observation 1 is a reversible change. Reversible changes refer to only those changes that can be undone. Among the given options:
1. Inflating balloons is a reversible change as once you remove the pressure from the balloon's mouth, the air escapes out and the balloon comes back to its original shape and size. Hence the change caused by inflating a balloon can be undone. 2. Harvesting crops is not a reversible change as once the crops are harvested they cannot be joined back together to grow.