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Hello Durgesh,
Hope you are doing well.
Important Topics: 1. Isotopes of hydrogen 2. Dihydrogen: Preparation, properties and uses 3. Hydrides and its three types 4. Difference between structures of ice and water 5. Chemical properties of water 6. Hard and soft water: Definition and methods of removal 7. H 2 O 2 : Preparation, structure and properties 8. Use of dihydrogen as an efficient fuel
Hope this will help you.
Good luck
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