Identifying Non-Biodegradable Substances
This question asks us to identify the group containing only non-biodegradable substances. Biodegradable substances can decompose naturally through biological processes, while non-biodegradable substances resist decomposition and persist in the environment.
Substance Group Analysis
- Biodegradable: Materials like spoilt food, vegetable peels, grass, flowers, and paper break down naturally over time.
- Non-biodegradable: Materials like most plastics (e.g., bubble wrap, milk packets, plastic bottles) do not decompose easily and remain in the environment for very long periods.
Evaluating the Options
- Option 1: Plastic bubble pack, regular milk packets, medicine plastic bottles - All items listed are types of plastic, which are known to be non-biodegradable.
- Option 2: Spoilt food, vegetable peels, used tea leaves - These are all organic materials and are biodegradable.
- Option 3: Grasses, spoilt food, vegetable peels - These are natural organic materials and are biodegradable.
- Option 4: Vegetable peels, flowers, paper - These are organic waste and paper, which are generally biodegradable.
Conclusion
Based on the analysis, only Option 1 contains exclusively non-biodegradable substances. Therefore, this group represents the correct answer.
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