MCQ
Rusting of iron is an example of:
- AReversible change.
- ✓Irreversible change.
- CPhysical change.
- DNo change.
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$P-$ Recycling reduces pollution
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$Q-$ Recycling makes the environment unfit of living things`
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$R-$ Recycling helps to conserve energy
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$S-$ Recycling results in wastage of natural resources
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