Which one of the following products is NOT obtained in anaerobic decomposition of glucose? (a) CO₂ (b) CH₄ (c) H₂S (d) H₂O

(c) H₂S

Fill in the blank: A bulking agent is added during the composting process to ______ the porosity of the solid mixture.

Increase

True or False: Leachate can be generated during aerobic composting of sewage sludge.

True

Riddle: I absorb sunlight and trap heat, keeping the Earth warm, yet too much of me can cause problems. What am I?

Greenhouse Gas (GHG)

Calculate the daily volume of thickened sludge (in m³/day) if the initial TSS concentration is 200 mg/L and it reduces by 60% after primary treatment.

10 m³/day

Which of the following statements is TRUE about the aeration process in a river affected by biodegradable organics? (a) D.O is lowest at the location of discharge (b) D.O is constant downstream (c) D.O increases upstream (d) D.O is highest at the discharge point.

(a) D.O is lowest at the location of discharge

Fill in the blank: The de-oxygenation rate constant is denoted by ______.

K

True or False: The concentration of sewage is denoted by Qs in the context of wastewater standards.

False. Qs denotes the flow rate of sewage, while Cs denotes the concentration.

Riddle: I am a measure of organic pollution, expressed in mg/L, and I can tell you how much oxygen is needed for decomposition. What am I?

Biological Oxygen Demand (BOD)

What is the compacted density of the landfill mentioned in the municipal solid waste management scenario?

550 kg/m³