Q1. [1] medium exam-ready
In which group do ALL items belong to non-biodegradable waste?
(A) Vegetable peels, plastic bags, glass
(B) Plastic bags, CFCs, glass bottles
(C) Paper cups, cotton cloth, fruit peels
(D) Wood, grass, leather
- A Vegetable peels, plastic bags, glass
- B Plastic bags, CFCs, glass bottles
- C Paper cups, cotton cloth, fruit peels
- D Wood, grass, leather
Generated by claude-sonnet-4-6 · 2026-06-26 00:58 · grounding rag
Model Answer
(B) Plastic bags, CFCs, glass bottles
Plastic bags, CFCs, and glass bottles are all non-biodegradable — they cannot be broken down by biological processes and persist in the environment for a long time.
Explanation
- Options A, C, and D each contain at least one biodegradable item (vegetable peels, fruit peels, paper cups, cotton, wood, grass, leather — all broken down by microorganisms).
- Option B is correct because plastic bags, CFCs, and glass bottles are all human-made, non-biodegradable substances that resist biological breakdown.
- Key trick: eliminate options with any biodegradable item to find the all-non-biodegradable group.