PYQs

Environment Engineering-I

2 papers · 101502

2020101502

B.Tech 5th Semester Exam., 2020

3 hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.
  • Assume data suitably, if not given.

Q.1 Choose the correct option of the following (any seven):

Ask AI
  1. Q1.1

    Normally designed period for a water supply scheme is

    a)

    up to 20 years

    b)

    20-40 years

    c)

    40-60 years

    d)

    60-80 years

    Ask AI
  2. Q1.2

    According to Indian Standards, water requirement per head per day in an office building is

    a)

    15 litres

    b)

    30 litres

    c)

    45 litres

    d)

    60 litres

    Ask AI
  3. Q1.3

    Methemoglobinemia, the blue baby syndrome is caused by consuming water containing excess of

    a)

    fluoride

    b)

    phosphate

    c)

    nitrite

    d)

    nitrate

    Ask AI
  4. Q1.4

    Colour of water is expressed in number of a

    a)

    po value

    b)

    silica scale

    c)

    platinum-cobalt scale

    d)

    None of the above

    Ask AI
  5. Q1.5

    The maximum permissible chloride in water for domestic purpose should not exceed

    a)

    250 mg/l

    b)

    500 mg/l

    c)

    750 mg/l

    d)

    1000 mg/l

    Ask AI
  6. Q1.6

    Suitable layout of water distribution system for a well-planned city is

    a)

    dead end system

    b)

    grid-iron system

    c)

    ring system

    d)

    radial system

    Ask AI
  7. Q1.7

    Reflux valve is also known as

    a)

    sluice valve

    b)

    air valve

    c)

    check valve

    d)

    drain valve

    Ask AI
  8. Q1.8

    Which of the following factors is primarily responsible for causing air pollution in modern days?

    a)

    Dust storms

    b)

    Industries and automobiles

    c)

    Forest fires

    d)

    None of the above

    Ask AI
  9. Q1.9

    During temperature inversion in atmosphere, air pollutants tend to

    a)

    accumulate above inversion layer

    b)

    accumulate below inversion layer

    c)

    disperse laterally

    d)

    disperse vertically

    Ask AI
  10. Q1.10

    As per IS: 4954-1964 an acceptable noise level for residential and business urban areas is

    a)

    40-50 dB

    b)

    30-40 dB

    c)

    15-25 dB

    d)

    50-60 dB

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    What is the difference between BOD and COD? Calculate 2 days $ 30^{\circ}C $ BOD of sewage sample whose 5 days $ 20^{\circ}C $ BOD is 110 mg/l. Assume $ K_{D} $ at $ 20^{\circ}C $ as 0.1.

    Ask AI
  2. Q2.2

    Explain in detail the structure of atmosphere.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the important characteristics of water used for domestic purpose. Draw the flow sheet of conventional treatment of water.

    Ask AI
  2. Q3.2

    What is the difference between disinfection and sterilization? Explain the different methods of disinfection.

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    Define air pollution, and differentiate between natural and man-made air pollution.

    Ask AI
  2. Q4.2

    What is photochemical smog, how is it formed and how does it effect?

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    Write a note on air pollution caused by automobiles and its control.

    Ask AI
  2. Q5.2

    What is meant by the effective height of a chimney and how is it computed?

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    What is noise? What is its unit of measurement? What are the ill effects of noise pollution?

    Ask AI
  2. Q6.2

    Explain in brief the major factors and action that may help in noise abatement in society.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    Illustrate with sketches the different types of layouts of pipe systems in distributing water, and compare their merits and demerits.

    Ask AI
  2. Q7.2

    Discuss briefly the common stresses produced in pipelines used for conveying water.

    Ask AI

Q.8 Solve both questions :

Ask AI
  1. Q8.1

    Briefly discuss the design principles involved in the design of a water supply network to be laid in multi-storeyed residential building.

    Ask AI
  2. Q8.2

    What factors will you keep in mind while designing plumbing system for water supply to a house?

    Ask AI

Q.9 Write short notes on (any four):

Ask AI
  1. Q9.1

    a)

    Storage tank

    b)

    Superchlorination

    c)

    Sampling process

    d)

    Theory of coagulation process

    e)

    Reverse osmosis

    Ask AI

2020V2101502

B.Tech 5th Semester Exam., 2020

3 hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.
  • Assume data suitably, if not given.

Q.1 Choose the correct option of the following (any seven):

Ask AI
  1. Q1.1

    Normally designed period for a water supply scheme is

    a)

    up to 20 years

    b)

    20-40 years

    c)

    40-60 years

    d)

    60-80 years

    Ask AI
  2. Q1.2

    According to Indian Standards, water requirement per head per day in an office building is

    a)

    15 litres

    b)

    30 litres

    c)

    45 litres

    d)

    60 litres

    Ask AI
  3. Q1.3

    Methemoglobinemia, the blue baby syndrome is caused by consuming water containing excess of

    a)

    fluoride

    b)

    phosphate

    c)

    nitrite

    d)

    nitrate

    Ask AI
  4. Q1.4

    Colour of water is expressed in number of a

    a)

    po value

    b)

    silica scale

    c)

    platinum-cobalt scale

    d)

    None of the above

    Ask AI
  5. Q1.5

    The maximum permissible chloride in water for domestic purpose should not exceed

    a)

    250 mg/l

    b)

    500 mg/l

    c)

    750 mg/l

    d)

    1000 mg/l

    Ask AI
  6. Q1.6

    Suitable layout of water distribution system for a well-planned city is

    a)

    dead end system

    b)

    grid-iron system

    c)

    ring system

    d)

    radial system

    Ask AI
  7. Q1.7

    Reflux valve is also known as

    a)

    sluice valve

    b)

    air valve

    c)

    check valve

    d)

    drain valve

    Ask AI
  8. Q1.8

    Which of the following factors is primarily responsible for causing air pollution in modern days?

    a)

    Dust storms

    b)

    Industries and automobiles

    c)

    Forest fires

    d)

    None of the above

    Ask AI
  9. Q1.9

    During temperature inversion in atmosphere, air pollutants tend to

    a)

    accumulate above inversion layer

    b)

    accumulate below inversion layer

    c)

    disperse laterally

    d)

    disperse vertically

    Ask AI
  10. Q1.10

    As per IS: 4954-1964 an acceptable noise level for residential and business urban areas is

    a)

    40-50 dB

    b)

    30-40 dB

    c)

    15-25 dB

    d)

    50-60 dB

    Ask AI

Q.2 Solve both questions :

Ask AI
  1. Q2.1

    What is the difference between BOD and COD? Calculate 2 days 30∘C30^{\circ}C BOD of sewage sample whose 5 days 20∘C20^{\circ}C BOD is 110 mg/l. Assume KDK_{D} at 20∘C20^{\circ}C as 0.1.

    Ask AI
  2. Q2.2

    Explain in detail the structure of atmosphere.

    Ask AI

Q.3 Solve both questions :

Ask AI
  1. Q3.1

    Discuss the important characteristics of water used for domestic purpose. Draw the flow sheet of conventional treatment of water.

    Ask AI
  2. Q3.2

    What is the difference between disinfection and sterilization? Explain the different methods of disinfection.

    Ask AI

Q.4 Solve both questions :

Ask AI
  1. Q4.1

    Define air pollution, and differentiate between natural and man-made air pollution.

    Ask AI
  2. Q4.2

    What is photochemical smog, how is it formed and how does it effect?

    Ask AI

Q.5 Solve both questions :

Ask AI
  1. Q5.1

    Write a note on air pollution caused by automobiles and its control.

    Ask AI
  2. Q5.2

    What is meant by the effective height of a chimney and how is it computed?

    Ask AI

Q.6 Solve both questions :

Ask AI
  1. Q6.1

    What is noise? What is its unit of measurement? What are the ill effects of noise pollution?

    Ask AI
  2. Q6.2

    Explain in brief the major factors and action that may help in noise abatement in society.

    Ask AI

Q.7 Solve both questions :

Ask AI
  1. Q7.1

    Illustrate with sketches the different types of layouts of pipe systems in distributing water, and compare their merits and demerits.

    Ask AI
  2. Q7.2

    Discuss briefly the common stresses produced in pipelines used for conveying water.

    Ask AI

Q.8 Solve both questions :

Ask AI
  1. Q8.1

    Briefly discuss the design principles involved in the design of a water supply network to be laid in multi-storeyed residential building.

    Ask AI
  2. Q8.2

    What factors will you keep in mind while designing plumbing system for water supply to a house?

    Ask AI

Q.9 Write short notes on (any four):

Ask AI
  1. Q9.1

    • Storage tank
    • Superchlorination
    • Sampling process
    • Theory of coagulation process
    • Reverse osmosis
    a)

    Storage tank

    b)

    Superchlorination

    c)

    Sampling process

    d)

    Theory of coagulation process

    e)

    Reverse osmosis

    Ask AI

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