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WorksheetsENVIRONMENTAL ENGINEERING UNIT 1
Total questions: 30
Worksheet time: 30mins
Which of the following is not a surface source of water?
River
Lake
Springs
Ponds
As per IS 1172, the average per capita demand for domestic water supply in India is:
100 lpcd
135 lpcd
200 lpcd
250 lpcd
The fire demand of a city can be estimated by which empirical formula?
Kuchling’s formula
Hazen-Williams formula
Mannings formula
Darcy’s formula
Which type of intake is suitable for rivers with fluctuating water levels?
Canal intake
Jackwell intake
Reservoir intake
Lake intake
An water bearing strata with layers of sand and gravel is called as
Aquiclude
Aquifer
Aquitard
Aquifuge
The joint used for joining CI pipes is:
Butt joint
Socket and spigot joint
Lap joint
Welded joint
Which test indicates the degree of hardness of water?
Chloride test
Turbidity test
EDTA titration test
pH test
The permissible limit of fluoride in drinking water as per BIS is:
0.5 mg/l
1.0 mg/l
1.5 mg/l
2.0 mg/l
Which disease is caused by excess nitrate in drinking water?
Cholera
Blue Baby Syndrome
Fluorosis
Dysentery
The most common method for bacteriological testing of water is:
Jar test
MPN [Most Probable Number] test
pH test
Conductivity test
The maximum permissible limit of turbidity in drinking water is:
1 NTU
5 NTU
10 NTU
15 NTU
Which of the following is not a water-borne disease?
Cholera
Typhoid
Dysentery
Tuberculosis
Total hardness of water is expressed in terms of:
CaCO₃
MgCl₂
NaCl
CaSO₄
Which IS code specifies the drinking water standards in India?
IS 456
IS 10500
IS 800
IS 3370
Population forecasting by Arithmetic Increase method assumes:
Constant percentage increase
Constant absolute increase
Doubling every decade
Exponential growth
Population of a town was 20,000 in 2001 and 30,000 in 2011. Forecast the population in 2021 by Arithmetic Increase method.
35,000
40,000
45,000
50,000
The permissible pH value of drinking water as per IS 10500 is:
6.0–7.0
6.5–8.5
7.0–8.0
6.0–9.0
Coliform organisms in water indicate:
Presence of chlorine
Presence of organic matter
Presence of pathogenic bacteria
Presence of fluoride
The permissible limit of chloride in drinking water as per IS 10500 is:
200 mg/l
250 mg/l
500 mg/l
1000 mg/l
Temporary hardness in water is caused by:
Chlorides of calcium
Bicarbonates of calcium and magnesium
Sulphates of magnesium
Nitrates of calcium
Relationship between total solids [TS], total dissolved solids [TDS] and total suspended solids [TSS] is given by
TSS = TDS+TS
TS=TDS-TSS
TDS=TSS+TS
TS=TDS+TSS
The permissible limit of Total dissolved solids in drinking water as per IS 10500 is:
200 mg/l
250 mg/l
500 mg/l
1000 mg/l
Which of the following organisms is used as an indicator of fecal contamination in drinking water?
E. coli
Streptococcus
Salmonella
Giardia
A 25ml sample was added with 225 ml of distilled water to make the sample odourless. Calculate the threshold odour number.
11
10
9
8
The population of the town in first three continuous years is given as 6000, 8000 and 10000 respectively. What is the population of the city in fourth continuous year by geometric increase method?
11500
12000
12870
14000
Consumption of higher concentration of fluorides exceeding 1.5 mg/L may cause:
Arsenicosis
Argyria
Blue baby disease
Fluorosis
Turbidity in water is due to
Organic salts
Suspended and colloidal particles
Algae
Fungi
Which of the following units is not used to measure turbidity of water?
NTU
ATU
JTU
FTU
Which of the following instrument is used to determine the colour of water?
Turbidity meter
Tinto meter
Dionic water meter
Conductivity meter
The acceptable limit of total hardness in water as per the Ministry of Urban Development, India is:
500 mg/l
300 mg/l
200 mg/l
100 mg/l
