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प्रश्न
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
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उत्तर
| Atom | Building block of matter |
| Element | Atoms of the same kind |
| Compound | Atoms of different kinds |
| Molecule | Smallest unit of a substance |
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