Download DBATU B.Tech 2019 Oct-Nov Civil-CE 5th Sem Environmental Engineering Question Paper

DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY, LONERE

Mid Semester Examination - Sept./Oct. 2019

Course: B. Tech in Civil Engineering

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Subject Name: Environmental Engineering

Subject Code: BTCVC 504

Max Marks: 20

Date: 23/09/2019

Duration: 1 Hr.

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Instructions to the Students:

1. Question 1 is compulsory.
2. Draw necessary diagram and sketches as and when required.
3. Assume suitable data as and when required.

Q. 1 Solve all the questions.

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1. The average quantity of water (in lpcd) required for domestic purposes according to IS code is
   Level CO Marks
   6 1 CO1 1
   1. 100
   2. 120
   3. 70

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   4. 135
2. Identify the correct relation between the following?
   1 CO2 1
   1. Dissolved solid = Total solid + Suspended solid
   2. Dissolved solid = Total solid - Suspended solid

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   3. Total solid = Dissolved solid / Suspended solid
   4. Dissolved solid = Suspended solid – Total solid
3. State whether the following statement is True or False.
   1 CO2 1
   

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   Carbonate hardness can be removed by adding lime to water.
   1. True
   2. False
4. Which of the following process is used to remove the colloidal particles from water?
   2 CO2 1
   1. Chemical precipitation

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   2. Chemical coagulation
   3. Ion exchange
   4. Adsorption
5. In which type of settling, sedimentation of discrete particles takes place?
   

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   1 CO2 1
   1. Zone settling
   2. Compression settling
   3. Hindered settling
   4. Discrete settling

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6. The pressure in the distribution mains does not depend on
   2 CO3 1
   1. Altitude to supply water
   2. Fire fighting requirements
   3. Availability of funds
   4. Quality of water

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Q.2 Solve Any Two of the following.

1. What do you understand by treatment of water? Why it is necessary? Give an outline of various processes adopted for treatment of water with sketch. 3X2 1 CO2 3
2. Explain different theory of filtration. 1 CO2 3
3. Explain Break point chlorination in detail with diagram. 2 CO2 3

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Q. 3 Solve Any One of the following.

1. Estimate projected population for the year of 2019, and 2022 based on the following data by using various methods. 2 CO1 8
   

   Year	Population
   1982	72000
   1992	85000
   2002	1,10,500
   2012	1,44,000

2. Design a Cascade Aerator having a discharge of 115 MLD. Assume suitable data.

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