Civil Engineering Questions And Answers :: Environmental Engineering: part5



Civil Engineering : Environmental Engineering QUESTIONS AND ANSWERS :: part5 : 1 to 5

Following Civil Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.Settling velocity increases with

specific gravity of solid particles
size of particles
depth of tank
temperature of liquid

2.The type of sewer which is suitable for both combined and separate system is

circular sewer
egg shaped sewer
horse-shoe type sewer
semi-elliptical sewer

3.Laying of sewers is usually done with the help of

a theodolite
a compass
sight rails and boning rods
a plane table

4.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

100 ppm
200 ppm
300 ppm
400 ppm

5.Dissolved oxygen in streams is

maximum at noon
minimum at noon
maximum at midnight
same throughout the day

More Environmental Engineering QUESTIONS AND ANSWERS available in next pages

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