Water And Wastewater Engineering Set 3

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This set of Water and Wastewater Engineering Multiple Choice Questions & Answers (MCQs) focuses on Water And Wastewater Engineering Set 3

Q1 | The normal value of over flow rates for plain primary sedimentation tanks, ranges between
Q2 | Which one of the following statements regarding septic tanks is wrong?
Q3 | In areas where rainy season is limited to a few months, the type of sewerage systemrecommended is
Q4 | The rate of accumulation of sludge in septic tanks is recommended as
Q5 | Dried sewage after treatment is used as
Q6 | For drains up to 15 cumecs, the depth “d” and “B” width are related by
Q7 | In areas where light rains are uniformly distributed throughout the year, the type of seweragesystem to be adopted is
Q8 | Self-cleansing velocity is
Q9 | 5 days-biochemical oxygen demand (BOD5) is taken at a temperature of
Q10 | A well oxidized sewage contains nitrogen mainly as
Q11 | In a sludge tank, the gas mainly produced, is
Q12 | If “D” is the diameter of upper circular portion, the overall depth of New Egg shaped sewersection, is
Q13 | In normal conditions, the period for sludge digestion, is
Q14 | For evaporation and measurement of settable solids, the apparatus used, is
Q15 | In trickling filter, B.O.D. is reduced to
Q16 | For design of sewers, percentage of sewage discharge is assumed
Q17 | The grit chambers of sewage treatment plants, are generally cleaned after
Q18 | Maximum permissible velocity 1.5 m/sec, is adopted in drains
Q19 | The average temperature of sewage in India, is
Q20 | Pick up the in-correct statement from the following:
Q21 | The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. Thepercentage decrease in the volume of sludge, is
Q22 | If ‘D’ is the diameter of upper circular portion, the overall depth of New Egg shaped sewersection, is
Q23 | In trickling filter, B.O.D. is reduced to
Q24 | For design of sewers, percentage of sewage discharge is assumed
Q25 | The grit chambers of sewage treatment plants, are generally cleaned after