Environmental Engineering Mcqs

Q.  Disinfection efficiency is________________?

a. reduced at higher pH value of water
b. unaffected by pH value of water
c. increased at higher pH value of water
d. highest at pH value equal to 7


ANSWER: See Answer
 
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MCQs:  Sewage treatment units are normally designed for______________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Standard BOD is measured at________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The rate of BOD exerted at any time is_____________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be___________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Facultative bacteria are able to work in________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Sewerage system is designed for_______________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Laying of sewers is usually done with the help of________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  If the sewage contains grease and fatty oils, these are removed in_________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Which of the following unit works in anaerobic conditions ?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The maximum efficiency of BOD removal is achieved in______________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  In facultative stabilization pond, the sewage is treated by________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Composting and lagooning are the methods of_______________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as___________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  For normal sludge, the value of sludge index for Indian conditions is________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  For the same solid content, if the quantity of sludge with moisture content of 98% is X, then the quantity of sludge with moisture content of 96% will be__________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The gas from sludge digestion tank is mainly composed of __________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The process of lagooning is primarily a means of________________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  A pipe which is installed in the house drainage to preserve the water seal of traps is called______________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Most of the bacteria in sewage are______________?
Category: Civil Engineering Mcqs,   Published by: T-Code Scripts