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विषयों
मुख्य विषय
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Chemistry
1 Matter and Its Composition
2 Physical and Chemical Changes
3 Elements, Compounds and Mixtures
4 Atoms, Molecules and Radicals
5 Language of Chemistry
6 Metals and Non-metals
7 Air and Atmosphere
1 Matter and Its Composition
2 Physical and Chemical Changes
3 Elements, Compounds and Mixtures
4 Atomic Structure
5 Language of Chemistry
6 Metals and Non-metals
7 Air and Atmosphere
