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CBSE Class 10 · Science · 24 past questions

Topic Energy flow and the 10 percent law 1 Biodegradable and non-biodegradable waste 0 Biomagnification and pesticides 0 Ecosystem components and balance 0 Food chains and trophic levels 0 Ozone layer depletion 0

Level Easy 1 Moderate 0

Year 2026 0 2025 0 2024 0 2023 0

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