Classify the following substances as biodegradable and non-biodegradable.

Question

Classify the following substances as biodegradable and non-biodegradable.

1. A. Biodegradable: Animal bones, Leather ; Non-Biodegradable: DDT, Mercury, Lead, Silver foils (Correct answer)
2. B. Biodegradable: DDT, Animal bones, Leather ; Non-Biodegradable: Mercury, Lead, Silver foils
3. C. Biodegradable: Mercury, Lead ; Non-Biodegradable: DDT, Silver foils, Leather, Animal bones
4. D. Biodegradable: DDT, Silver foils, Animal bones ; Non-Biodegradable: Mercury, Lead, Leather

Correct Answer

Option A — Biodegradable: Animal bones, Leather ; Non-Biodegradable: DDT, Mercury, Lead, Silver foils

Detailed Solution & Explanation

The correct answer is Biodegradable: Animal bones, Leather ; Non-Biodegradable: DDT, Mercury, Lead, Silver foils.

Key Points

• Animal bones and leather are biodegradable (organic materials that decompose).
• DDT (persistent organic pollutant), Mercury, Lead, and Silver foils are non-biodegradable.