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Water-and-waste-water Questions Set 28:

Quiz Mode

Most of the turbidity meters work on the scattering principle. The turbidity value obtained is expressed in

CFU

FTU

JTU

NTU

Solution:

A _________ is a type of toilet that collects human faeces in a hole in the ground.

Pit toilet

One Piece Toilet

Two Piece Toilet

Solution:

Zero hardness of water is achieved by

Lima soda process

Excess lime treatment

Ion exchange treatment

Excess alum and lime treatment

Solution:

Where is the anti-siphonage pipe connected to?

Top of P-trap of the WC

Bottom of P-trap of the WC

Main soil pipe

Side of the water closet

Solution:

In which type of water demand does the minimum average consumption of water take place?

Domestic water demand

Industrial water demand

Institutional and commercial water demand

Fire demand

Solution:

Which indicator is used for the estimation of chlorides in a given sample of water by titration with a standard silver nitrate solution?

Potassium manganate

Potassium chloride

Potassium chromate

Potassium dichromate

Solution:

The trickling filter has a BOD removal efficiency of 85% and the efficiency of the primary treatment is 45%. If the raw BOD is 300 mg/l, what is the BOD of the effluent leaving the trickling filter?

20.75 mg/l

26.81 mg/l

22.68 mg/l

24.75 mg/l

Solution:

During chlorination process, aqueous (aq) chlorine reacts rapidly with water to form Cl^-, HOCL and H⁺ as shown below.
Cl₂(aq) + H₂O ↔ HOCl + Cl^- +H⁺
The most active disinfectant in the chlorination process from amongst the following is:

HOCl

H⁺

H₂O

Cl^-

Solution:

A settling tank of 4m depth and 80 m long has a flow velocity of water observed as 1.5 cm/sec. What size of particles of specific gravity 2.65 may be effectively removed, if the kinematic viscosity of water is 0.02 cm²/sec, in 4.1 x 10^-2 mm?

4.1

2.7

3.3

4.5

Solution:

A water treatment plant of capacity, 1 m³/s has filter boxes of dimensions 6 m x 10 m. Loading rate to the filters is 120 m³/day/m². When two of the filters are out of service for back washing, the loading rate (rounded off to nearest integer, in m³/day/m²) is______.

Water-and-waste-water Questions Set 28:

Most of the turbidity meters work on the scattering principle. The turbidity value obtained is expressed in

Solution:

A _________ is a type of toilet that collects human faeces in a hole in the ground.

Solution:

Zero hardness of water is achieved by

Solution:

Where is the anti-siphonage pipe connected to?

Solution:

In which type of water demand does the minimum average consumption of water take place?

Solution:

Which indicator is used for the estimation of chlorides in a given sample of water by titration with a standard silver nitrate solution?

Solution:

The trickling filter has a BOD removal efficiency of 85% and the efficiency of the primary treatment is 45%. If the raw BOD is 300 mg/l, what is the BOD of the effluent leaving the trickling filter?

Solution:

During chlorination process, aqueous (aq) chlorine reacts rapidly with water to form Cl^-, HOCL and H⁺ as shown below.
Cl₂(aq) + H₂O ↔ HOCl + Cl^- +H⁺
The most active disinfectant in the chlorination process from amongst the following is:

Solution:

A settling tank of 4m depth and 80 m long has a flow velocity of water observed as 1.5 cm/sec. What size of particles of specific gravity 2.65 may be effectively removed, if the kinematic viscosity of water is 0.02 cm²/sec, in 4.1 x 10^-2 mm?

Solution:

A water treatment plant of capacity, 1 m³/s has filter boxes of dimensions 6 m x 10 m. Loading rate to the filters is 120 m³/day/m². When two of the filters are out of service for back washing, the loading rate (rounded off to nearest integer, in m³/day/m²) is______.

Solution:

Related Question Sets:

Related Topics:

Water-and-waste-water Questions Set 28:

Most of the turbidity meters work on the scattering principle. The turbidity value obtained is expressed in

Solution:

A _________ is a type of toilet that collects human faeces in a hole in the ground.

Solution:

Zero hardness of water is achieved by

Solution:

Where is the anti-siphonage pipe connected to?

Solution:

In which type of water demand does the minimum average consumption of water take place?

Solution:

Which indicator is used for the estimation of chlorides in a given sample of water by titration with a standard silver nitrate solution?

Solution:

The trickling filter has a BOD removal efficiency of 85% and the efficiency of the primary treatment is 45%. If the raw BOD is 300 mg/l, what is the BOD of the effluent leaving the trickling filter?

Solution:

During chlorination process, aqueous (aq) chlorine reacts rapidly with water to form Cl-, HOCL and H+ as shown below.Cl2(aq) + H2O ↔ HOCl + Cl- +H+The most active disinfectant in the chlorination process from amongst the following is:

Solution:

A settling tank of 4m depth and 80 m long has a flow velocity of water observed as 1.5 cm/sec. What size of particles of specific gravity 2.65 may be effectively removed, if the kinematic viscosity of water is 0.02 cm2/sec, in 4.1 x 10-2 mm?

Solution:

A water treatment plant of capacity, 1 m3/s has filter boxes of dimensions 6 m x 10 m. Loading rate to the filters is 120 m3/day/m2. When two of the filters are out of service for back washing, the loading rate (rounded off to nearest integer, in m3/day/m2) is______.

Solution:

Related Question Sets:

Related Topics:

During chlorination process, aqueous (aq) chlorine reacts rapidly with water to form Cl^-, HOCL and H⁺ as shown below.
Cl₂(aq) + H₂O ↔ HOCl + Cl^- +H⁺
The most active disinfectant in the chlorination process from amongst the following is:

A settling tank of 4m depth and 80 m long has a flow velocity of water observed as 1.5 cm/sec. What size of particles of specific gravity 2.65 may be effectively removed, if the kinematic viscosity of water is 0.02 cm²/sec, in 4.1 x 10^-2 mm?

A water treatment plant of capacity, 1 m³/s has filter boxes of dimensions 6 m x 10 m. Loading rate to the filters is 120 m³/day/m². When two of the filters are out of service for back washing, the loading rate (rounded off to nearest integer, in m³/day/m²) is______.