The GATE Grind

GATE Water and Waste Water Quality and Treatment: Sewerage system design and quantity of domestic wastewater – Previous Year Questions

2 GATE previous year questions on Sewerage system design and quantity of domestic wastewater (Water and Waste Water Quality and Treatment, Civil Engineering) with answers and explanations, from every paper.

  1. GATE 2025 CE (CE2) Q17 (1 mark, Multiple choice) – The bacteria mainly responsible for crown corrosion in a sewer is .
  2. GATE 2026 CE (CE1) Q44 (2 marks, Multiple choice) – The average sewage from a city is 90 million litres per day and the average 5-day Biochemical Oxygen Demand (BOD 5) is 300 mg/l. Average standard BOD…