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Environment(Test-14)

Quiz by suraj kapoor

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80 questions
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  • Q1

    Mark the incorrect statement

    Sanitary well should not be less than 15 metre from source of contamination

    All the statements are correct

    Water from deep well is less harder than the shallow well

    Sanitary well should be less than 100 m from the household

    30s
  • Q2

    Mark the incorrect statement

    All the statements are correct

    Starch iodide is the indicator 

    If second cup develops blue color , it means 4 gm of bleaching powder is required for 455 litres of water

    There are 6 black cups and 1 white cups

    30s
  • Q3

    Mark the incorrect statement

    High test hypochlorite has 35% active chlorine

    Chlorine gas is the most stable form of chlorine 

    Chlorine bound to organic and nitrogen compounds is known as combined chlorine

    All the statements are correct

    30s
  • Q4

    Mark the incorrect statement

    Biological quality of filtered water in slow sand filter  is lesser than rapid sand filter

    Rapid sand filter is suitable for turbid water

    All are correct

    Rate of filtration in slow sand filter is 2-3 m.g.a.d 

    30s
  • Q5

    All are the temporary methods for removal of hardness except

    Permutit process

    Base exchange process

    Addition of lime

    All are  temporary methods

    15s
  • Q6

    Mark the incorrect match about inorganic ions in drinking water

    Arsenic-0.1mg/lt

    Flouride-1.5 mg/lt

    Lead -0.01 mg/lt

    Cadium- 0.003 mcg/lt

    15s
  • Q7

    Identify the disease related

    Question Image

    Minimata disease

    Anencephaly

    Cerebral palsy

    Ouch-Ouch disease

    15s
  • Q8

    All are correct WHO standards for water quality except

    TDS<600 mg /lt

    Hardness -100-300mg /lt of calcium ion

    All are correct

    Turbidity<5NTU

    30s
  • Q9

    Blue baby syndrome is associated with

    Question Image

    Arsenic

    Nitrates

    Lead

    Mercury

    15s
  • Q10

    What is used to regulate the dose of chlorine?

    Chloroscope

    Chloronome

    Horrock's apparatus

    All of the above

    15s
  • Q11

    Strong sewage is known as BOD

    More than 500 gm/lt

    More thabn 200 gm/lt

    More than 300 gm/lt

    More than 100 gm/lt

    15s
  • Q12

    Banglore method is

    Anaerobic compositing

    Aerobic compositing

    Aerobic trench method

    Anaerobic trench method

    15s
  • Q13

    Controlled tipping method suitable  for sloping areas

    Trench method

    Ramp method

    Area method

    All of the above

    15s
  • Q14

    Mark the incorrect statement

    In septic tank aerobic digestion takes place inside the tank

    Distance from water surface to the top of tank 1-1.5 metre

    Depth is 5-7 ft

    Length is twice the width

    30s
  • Q15

    Mechanism in oxidation pond involve interaction of

    Sunlight , bacteria , Fungi

    Sunlight , bacteria 

    Sunlight , bacteria , algae

    Sunlight ,fungi , algae

    30s

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