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विषय
मुख्य विषय
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Science and Technology 1
1 Gravitation
2 Periodic Classication of Element
3 Chemical reactions and equations
4 Effects of electric current
5 Heat
6 Refraction of light
7 Lenses
8 Metallugy
9 Carbon compounds
10 Space Missions
1 Gravitation
2 Periodic Classification of Element
3 Chemical reactions and equations
4 Effects of electric current
5 Heat
6 Refraction of light
7 Lenses
8 Metallurgy
9 Carbon Compounds
10 Space Missions
