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सायन्स ऍन्ड टेक्नॉलॉजी भाग - I

• Prelims

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• 1. Gravitational Attraction

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• 2. Periodic Classification of Elements

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• 3. Chemical Reaction And Equations

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• 4. Effects of Electric Current

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• 5. Heat

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• 6. Refraction of Light

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• 7. Lenses and Their Uses

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• 8. Metallurgy

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• 9. Citrus Carbine

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• 10. Space Missions

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