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State PCS PYQPrelims 2022

UPPCS · प्रश्न 134

Which of the following materials is biodegradable?

  1. Plastic cups
  2. Wool
  3. Glass bottle
  4. Aluminium foil
उत्तर देखें और व्याख्या

उत्तर: (B) Wool

व्याख्या

Wool is a natural protein fibre broken down by microbes.