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Water-and-waste-water Questions Set 5:

Quiz Mode

The Federal Water Pollution Control Act of 1948 was the first major U.S. law to address water pollution.

1948

1976

1984

1950

Solution:

The population of a town is 325,000. As per the Freeman formula, the fire demand of the town in liters per minute is

82,000

78,346

87,945

85,200

Solution:

The threshold odour number (TON) for a water sample of 80 ml, diluted to a standard 800 ml mixture, in which the odour is just barely detectable to the sense of smell, is

None of these

Solution:

If the total hardness and alkalinity of a water sample are 200 mg/l and 260 mg/l of CaCO₃ respectively, what are the values of carbonate and non-carbonate hardness?

200 mg/l and 0 mg/l

0 mg/l and 60 mg/l

0 mg/l and 200 mg/l

60 mg/l and 0 mg/l

Solution:

An approximate estimation of total dissolved solids (TDS) in a given water sample is often made by measuring

Electrical conductivity of the water sample

Electromagnetic conductivity of the water sample

Sound conductivity of the water sample

Thermal conductivity of the water sample

Solution:

Match the following List I to List II

List I

i. Copper

ii. Nitrate

iii. Fluoride

iv. Sulfate

List II

1. Fever, Cavities in teeth

2. Laxative effect

3. Methemoglobinemia

4. Affect human lungs

i-3, ii-2, iii-1, iv-4

i-1, ii-2, iii-3, iv-4

i-4, ii-3, iii-1, iv-2

i-4, ii-1, iii-2, iv-3

Solution:

A circular stormwater sewer is to be laid for an area of 60 hectares, and its length is 4800 m. A velocity of 2 m/s may be allowed when discharging at the maximum rate. The time of entry from the farthest area is 12 minutes. Calculate the time of concentration in minutes.

Solution:

The alkalinity and the hardness of a water sample are 250 mg/L and 350 mg/L as CaCO₃, respectively. The water has

350 mg/L carbonate hardness and zero non-carbonate hardness

250 mg/L carbonate hardness and 350 mg/L non-carbonate hardness

250 mg/L carbonate hardness and 100 mg/L non-carbonate hardness

250 mg/L carbonate hardness and zero non-carbonate hardness

Solution:

The correct sequence of water treatment processes is:

1. Filtration, 2. Chlorination, 3. Sedimentation, 4. Coagulation, 5. Flocculation

4. Coagulation, 5. Flocculation, 3. Sedimentation, 2. Chlorination, 1. Filtration

2. Chlorination, 3. Sedimentation, 1. Filtration, 5. Flocculation, 4. Coagulation

1. Filtration, 2. Chlorination, 5. Flocculation, 3. Sedimentation, 4. Coagulation

Solution:

Match List-I with List-II and select the correct answer using the code given below the lists:

List-I

A. Primary sedimentation

B. Coagulation

C. Flocculation

D. Secondary sedimentation

List-II

1. Differential settling

2. Hindered settling

3. Charge neutralization

4. Growth of flocs

5. Flow-through velocity

A - 2, B - 5, C - 4, D - 1

A - 1, B - 3, C - 4, D - 2

A - 2, B - 4, C - 3, D - 1

A - 5, B - 4, C - 3, D - 2

Water-and-waste-water Questions Set 5:

The Federal Water Pollution Control Act of 1948 was the first major U.S. law to address water pollution.

Solution:

The population of a town is 325,000. As per the Freeman formula, the fire demand of the town in liters per minute is

Solution:

The threshold odour number (TON) for a water sample of 80 ml, diluted to a standard 800 ml mixture, in which the odour is just barely detectable to the sense of smell, is

Solution:

If the total hardness and alkalinity of a water sample are 200 mg/l and 260 mg/l of CaCO₃ respectively, what are the values of carbonate and non-carbonate hardness?

Solution:

An approximate estimation of total dissolved solids (TDS) in a given water sample is often made by measuring

Solution:

Match the following List I to List II

List I

i. Copper

ii. Nitrate

iii. Fluoride

iv. Sulfate

List II

1. Fever, Cavities in teeth

2. Laxative effect

3. Methemoglobinemia

4. Affect human lungs

Solution:

A circular stormwater sewer is to be laid for an area of 60 hectares, and its length is 4800 m. A velocity of 2 m/s may be allowed when discharging at the maximum rate. The time of entry from the farthest area is 12 minutes. Calculate the time of concentration in minutes.

Solution:

The alkalinity and the hardness of a water sample are 250 mg/L and 350 mg/L as CaCO₃, respectively. The water has

Solution:

The correct sequence of water treatment processes is:

Solution:

Solution:

Related Question Sets:

Related Topics:

Water-and-waste-water Questions Set 5:

The Federal Water Pollution Control Act of 1948 was the first major U.S. law to address water pollution.

Solution:

The population of a town is 325,000. As per the Freeman formula, the fire demand of the town in liters per minute is

Solution:

The threshold odour number (TON) for a water sample of 80 ml, diluted to a standard 800 ml mixture, in which the odour is just barely detectable to the sense of smell, is

Solution:

If the total hardness and alkalinity of a water sample are 200 mg/l and 260 mg/l of CaCO3 respectively, what are the values of carbonate and non-carbonate hardness?

Solution:

An approximate estimation of total dissolved solids (TDS) in a given water sample is often made by measuring

Solution:

Match the following List I to List II List I i. Copper ii. Nitrate iii. Fluoride iv. Sulfate List II 1. Fever, Cavities in teeth 2. Laxative effect 3. Methemoglobinemia 4. Affect human lungs

Solution:

A circular stormwater sewer is to be laid for an area of 60 hectares, and its length is 4800 m. A velocity of 2 m/s may be allowed when discharging at the maximum rate. The time of entry from the farthest area is 12 minutes. Calculate the time of concentration in minutes.

Solution:

The alkalinity and the hardness of a water sample are 250 mg/L and 350 mg/L as CaCO3, respectively. The water has

Solution:

The correct sequence of water treatment processes is:

Solution:

Solution:

Related Question Sets:

Related Topics:

If the total hardness and alkalinity of a water sample are 200 mg/l and 260 mg/l of CaCO₃ respectively, what are the values of carbonate and non-carbonate hardness?

Match the following List I to List II

List I

i. Copper

ii. Nitrate

iii. Fluoride

iv. Sulfate

List II

1. Fever, Cavities in teeth

2. Laxative effect

3. Methemoglobinemia

4. Affect human lungs

The alkalinity and the hardness of a water sample are 250 mg/L and 350 mg/L as CaCO₃, respectively. The water has