Water Pollution Quiz PDF: Questions and Answers - 103

MCQ 511: In a digestion tank, the produced gases has a high

1. Calorific value
2. density
3. Gas Value
4. Digestion Value

MCQ 512: Primary treatment is carried out for removal of large

1. Particles
2. Sedimentation
3. Floating materials
4. Suspended solids

MCQ 513: What class are humans categorized in ?

1. Omnivores
2. Carnivores
3. Herbivores
4. Producer

MCQ 514: What is the air pressure at sea level?

1. 4033.6g/sq.cm
2. 3033.6g/sq.cm
3. 2033.6g/sq.cm
4. 1033.6g/sq.cm

MCQ 515: The lowest 'pH' measurement observed in kane and Pennsylvania, was approximately

1. 2.9
2. 4
3. 3
4. 2.7