MCQ
A battery is:
- AA single cell.
- ✓A combination of cells in which cells are joined $(+) $ to $(-).$
- CA combination of cells in which cells are joined $(+)$ to $(+).$
- DNone of these.
In a battery two or more cells are combined in such a way that $(+)$ terminal of one cell is joined to $(-)$ terminal of other.
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S.No.
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Changes
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Type
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$1.$
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Sharpening of pencil.
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Physical, reversible.
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$2.$
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Evaporation of water.
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Physical, irreversible.
|
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$3.$
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Opening of a bud.
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Chemical irreversible.
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$4.$
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Rusting of iron.
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Chemical reversible.
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