Q. The filter over which sewage is sprinkled is called as

  • (A) Percolating filter
  • (B) Trickling filter
  • (C) Intermittent sand filter
  • (D) Contact bed
✅ Correct Answer: (B) Trickling filter

Published by Ram Sharma ⭐ 193.88K Points at 14-Mar-2022 02:38 pm in General Awareness

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