# Water And Wastewater Engineering Set 5

This set of Water and Wastewater Engineering Multiple Choice Questions & Answers (MCQs) focuses on Water And Wastewater Engineering Set 5

Q1 | The spacing of bars for perforations in coarse screens used for the treatment of sewage, is
Q2 | The pH value of fresh sewage is usually
Q3 | The maximum depth of sedimentation tanks, is kept
Q4 | Lead caulked joints are used for laying
Q5 | If D is the diameter of a circular sewer and D' is the top horizontal diameter of an equivalent eggshaped section, the relationship which holds good, is
Q6 | The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewermay be
Q7 | The quantity of liquid waste which flows in sewers during the period of rainfall, is known
Q8 | Nitrogen cycle of sewage, is
Q9 | Depletion of ozone layer in the outer atmosphere may cause
Q10 | The minimum diameter of a sewer is kept
Q11 | Which one of the following gases is most significant as air pollutant?
Q12 | Hazen's formula VS = 418 (GS - Gw)d [(3T + 70)/100] is used for the settlement velocity of theparticles of diameter
Q13 | For sewers, inverted siphon is provided for
Q14 | For large sewers, maximum distance between manholes may be
Q15 | In sewers designed with self cleansing velocity,
Q16 | The value of Chezy's constant C = 157.6/(1.81 + K/ ?? ) is used in
Q17 | Pathogens (or pathogenic bacteria’s) in water may cause
Q18 | The rate of accumulation of sludge per person per year, is
Q19 | The screens are fixed
Q20 | In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,
Q21 | In detritus tanks
Q22 | The flow velocity in detritus tanks is
Q23 | If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circularsection, is
Q24 | A nuisance is experienced in diluting water if dilution factor is less than
Q25 | A manhole is generally provided at each