Chapter 18: Wastewater management

Liquid waste that is discharged into water bodies is known as __________

• Sewage

• Clarified water

• Effluent

• None of these

The excessive amount of plant nutrients that are added to lakes and streams are primarily phosphorus, nitrogen and ______________

Primary treatment is a __________ process.

• Biological

• Mechanical

• Chemical

• Incinerating

We should not throw cooking oil and paint down the drain because

• they break the pipe

• they harden and clog the pipe

• they flow through the drain freely

• None of these

Which of these are NOT waterborne diseases

• Gastroenteritis

• Bubonic Plague

• Tuberculosis

• Amoebiasis

Septic tanks are mostly used in

• Urban cities

• Rural villages

• Isolated areas

• Semi-urban areas

Help Us Green, an initiative started in ______________ by Ankit Agarwal and Karan Rastogi.

• 2021

• 2015

• 2011

• 1998

Sewage in large cities is known as

• Corporation wastewater

• Municipal wastewater

• Rural wastewater

• Urban wastewater

This is the part where solid wastes are allowed to settle down and light floatable wastes rise

• Grit Chamber

• Sedimentation Tank

• Aeration Tank

• None of These

The Ganga action plan was successful

• TRUE

• FALSE