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प्रश्न
State how carbon occurs in the free state and in the combined state.
उत्तर
- Occurence of carbon : In free state – diamond, graphite, in impure form as coal.
- In combind state : CO2 in atmosphere, hydro-carbon as natural gas, petroleum, cellulose in wood and limestone CaCO3.
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संबंधित प्रश्न
Write the molecular formula of the 2nd and 3rd member of the homologous series whose first member is ethene.
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| 2. | Andre Geim | Oxidation |
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| 4. | Thermocol | Triple bond |
| 5. | Combution | Polystyrene |
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