Environmental Engineering QUESTIONS AND ANSWERS

Civil Engineering : Environmental Engineering QUESTIONS AND ANSWERS :: part5 : 6 to 10

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

6.The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by

TOD>BOD>COD

TOD>COD>BOD

BOD>COD>TOD

COD>BOD>TOD

7.Which of the following retards the self purification of stream ?

higher temperature

sunlight

satisfying oxygen demand

none of the above

8.The ratio of 5 day BOD to ultimate BOD is about

1/3

2/3

3/4

1.0

9.The effect of increasing diameter of sewer on the self cleansing velocity is

to decrease it

to increase it

fluctuating

nil

10.The pathogens can be killed by

nitrification

chlorination

oxidation

none of the above

More Environmental Engineering QUESTIONS AND ANSWERS available in next pages

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