APPSC Group-II Mains 2025 Paper II · Question 144

Question 144 of the APPSC Group-II Mains 2025 Paper II (23 February 2025). Try it first, then open the answer and explanation.

1. Mains 2025 · P-II · Q144 · Science & Technology · Environment & Ecology

   Which of these is not a biodegradable waste?

   1. Vegetable peels
   2. Fruits
   3. Wool
   4. Tin

   వీటిలో ఏది బాక్టీరియాతో నశింపజేసే (బయోడిగ్రేడబుల్) వ్యర్థం కాదు ?

   1. కూరగాయ తొక్కలు
   2. పండ్లు
   3. ఉన్ని
   4. తగరం (టిన్)
   Show answer

   Answer: (4) Tin

   సమాధానం: (4) తగరం (టిన్)

   Tin is a metal that microbes cannot decompose, though it can be recycled. Wool is a natural protein (keratin) fibre and slowly biodegrades.

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