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विषय
मुख्य विषय
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Chemistry
1 Matter
2 Physical and Chemical Changes
3 Elements, Compounds and Mixtures
4 Atomic Structure
5 Language of Chemistry
6 Chemical Reactions
7 Hydrogen
8 Water
9 Carbon and Its Compounds
1 Matter
2 Physical & Chemical Changes
3 Elements, Compounds & Mixtures
4 Atomic Structure
5 Language of Chemistry
6 Chemical Reactions
7 Hydrogen
8 Water
9 Carbon & Its Compounds
