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Water-and-waste-water Questions Set 7:

Quiz Mode

In disinfection, which form of chlorine is most effective in killing pathogenic bacteria?

OCl

NH2Cl

HOCl

Solution:

The discharge per unit drawdown of a well is called the

specific storage

specific yield

specific capacity

None of the above

Solution:

The disinfectant property of chlorine is more efficient when its pH is _____.

independent of pH

increased

first increased and then decreased

reduced

Solution:

According to Buston's formula, the fire demand for a city with a population of 250,000 is

89,530 lit/min

89,535 lit/min

89,540 lit/min

89,545 lit/min

Solution:

In a water sample, the total hardness is 205 mg/L and the alkalinity is 300 mg/L. The carbonate hardness (mg/L as CaCO₃) present in the above water sample is:

205 mg/L

250 mg/L

275 mg/L

289 mg/L

Solution:

Which one of the following pairs is NOT correctly matched?

Activated sludge - aeration

Trickling filters - attached growth system

Oxidation ditch - algae

Channel grit chamber - proportional weir

Solution:

In a conventional activated sludge process, the mixed liquor suspended solids (MLSS) concentration is generally kept in which range?

< 100 mg/L

1000 - 2000 mg/L

2000 – 3000 mg/L

3000 – 5000 mg/L

Solution:

A rectangular tank of 23 m length, 3 m width, and 2.7 m depth is provided with a detention time of 1 hour. If the total effluent weir length is 30 m, the weir loading is:

141 m³/d/m

143 m³/d/m

145 m³/d/m

149 m³/d/m

Solution:

During sewage treatment, which treatment unit has the minimum amount of suspended solids in its effluent?

Detritus Channel

Primary Sedimentation Tank

Secondary Sedimentation Tank

Activated sludge process aeration tank

Solution:

An amount of 35.67 mg HCL is added to distilled water and the total solution volume is made to one litre. The atomic weights of H and CL are 1 and 35.5, respectively. Neglecting the dissociation of water, the pH of the solution is:

2.01

3.01

3.50

2.5

Water-and-waste-water Questions Set 7:

In disinfection, which form of chlorine is most effective in killing pathogenic bacteria?

Solution:

The discharge per unit drawdown of a well is called the

Solution:

The disinfectant property of chlorine is more efficient when its pH is _____.

Solution:

According to Buston's formula, the fire demand for a city with a population of 250,000 is

Solution:

In a water sample, the total hardness is 205 mg/L and the alkalinity is 300 mg/L. The carbonate hardness (mg/L as CaCO₃) present in the above water sample is:

Solution:

Which one of the following pairs is NOT correctly matched?

Solution:

In a conventional activated sludge process, the mixed liquor suspended solids (MLSS) concentration is generally kept in which range?

Solution:

A rectangular tank of 23 m length, 3 m width, and 2.7 m depth is provided with a detention time of 1 hour. If the total effluent weir length is 30 m, the weir loading is:

Solution:

During sewage treatment, which treatment unit has the minimum amount of suspended solids in its effluent?

Solution:

An amount of 35.67 mg HCL is added to distilled water and the total solution volume is made to one litre. The atomic weights of H and CL are 1 and 35.5, respectively. Neglecting the dissociation of water, the pH of the solution is:

Solution:

Related Question Sets:

Related Topics:

Water-and-waste-water Questions Set 7:

In disinfection, which form of chlorine is most effective in killing pathogenic bacteria?

Solution:

The discharge per unit drawdown of a well is called the

Solution:

The disinfectant property of chlorine is more efficient when its pH is _____.

Solution:

According to Buston's formula, the fire demand for a city with a population of 250,000 is

Solution:

In a water sample, the total hardness is 205 mg/L and the alkalinity is 300 mg/L. The carbonate hardness (mg/L as CaCO3) present in the above water sample is:

Solution:

Which one of the following pairs is NOT correctly matched?

Solution:

In a conventional activated sludge process, the mixed liquor suspended solids (MLSS) concentration is generally kept in which range?

Solution:

A rectangular tank of 23 m length, 3 m width, and 2.7 m depth is provided with a detention time of 1 hour. If the total effluent weir length is 30 m, the weir loading is:

Solution:

During sewage treatment, which treatment unit has the minimum amount of suspended solids in its effluent?

Solution:

An amount of 35.67 mg HCL is added to distilled water and the total solution volume is made to one litre. The atomic weights of H and CL are 1 and 35.5, respectively. Neglecting the dissociation of water, the pH of the solution is:

Solution:

Related Question Sets:

Related Topics:

In a water sample, the total hardness is 205 mg/L and the alkalinity is 300 mg/L. The carbonate hardness (mg/L as CaCO₃) present in the above water sample is: