Environmental Engineering QUESTIONS AND ANSWERS

Civil Engineering : Environmental Engineering QUESTIONS AND ANSWERS :: part5 : 11 to 15

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

11.The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is

1 ppm

4 ppm

10 ppm

40 ppm

12.The means of access for inspection and cleaning of sewer line is known as

inlet

manhole

drop manhole

catch basin

13.The characteristics of fresh and septic sewage respectively are

acidic and alkaline

alkaline and acidic

both acidic

both alkaline

14.Sewage treatment units are normally designed for

5-10 years

15-20 years

30-40 years

40-50 years

15.Select the correct statement.

5 day BOD is the ultimate BOD.

5 day BOD is greater than 4 day BOD keeping other conditions same.

5 day BOD is less than 4 day BOD keeping other conditions same.

BOD does nof depend on time.

More Environmental Engineering QUESTIONS AND ANSWERS available in next pages

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