Paper 1 · People, Development and Environment
UGC NET December 2021 June 2022 (09.07.2022) Shift-II
Identify the non-recyclable wastes among the following.
- 1. Paper
- 2. Plastic bottles
- 3. Thermocol
- 4. Tetra packs
- 5. Metal
A2, 3, 4 and 5 only
B2, 4 and 5 only
C3 and 4 only ✓ Correct
D1, 3 and 5 only
Correct answer: (C) 3 and 4 only — Among the listed items, thermocol and tetra packs are the hardest to recycle, so the answer is 3 and 4.
Explanation
★Among the listed items, thermocol and tetra packs are the hardest to recycle, so the answer is 3 and 4.
★Paper, plastic bottles, and metal are all commonly recycled materials.
★Thermocol, a form of expanded polystyrene, is very difficult and rarely recycled.
★Tetra packs combine paper, plastic, and aluminium layers that are hard to separate.
★This layering makes tetra packs troublesome for ordinary recycling streams.
★This item was dropped by the examining body, as it treated all listed wastes as recyclable.
★In practice thermocol and multi-layer packaging remain a persistent waste problem.
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