In water treatment, alum [Al2 (SO4 )3 ] is used for the process of (A) Filtration (B) Coagulation (C) Sedimentation (D) Disinfection

In water treatment, alum [Al2
(SO4
)3
] is used for the process of
(A) Filtration
(B) Coagulation
(C) Sedimentation
(D) Disinfection
by

1 Answer

Answer :

(B) Coagulation
by

Related questions

Alum [Al2 (SO4 )3 ] is used as a coagulant in water treatment to remove (A) Colour (B) Turbidity (C) Bacteria (D) All (A), (B) and (C)

Description : Alum [Al2 (SO4 )3 ] is used as a coagulant in water treatment to remove (A) Colour (B) Turbidity (C) Bacteria (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Out of NaCl, MgSO4 , Al2 (SO4 ) 3 , K4 [Fe(CN)6 ], which one will bring about the coagulation of a gold sol quickest and in the least of concentration ?

Description : Out of NaCl, MgSO4 , Al2 (SO4 ) 3 , K4 [Fe(CN)6 ], which one will bring about the coagulation of a gold sol quickest and in the least of concentration ?

Last Answer : Ans. Al2 (SO4 ) 3 .

Drinking (potable) water treatment does not involve(A) Coagulation(B) Sedimentation(C) Softening(D) Disinfection

Description : Drinking (potable) water treatment does not involve (A) Coagulation (B) Sedimentation (C) Softening (D) Disinfection

Last Answer : (C) Softening

__________ is the process of killing organism in water. (A) Coagulation (B) Sterilisation (C) Disinfection (D) Sedimentation

Description : __________ is the process of killing organism in water. (A) Coagulation (B) Sterilisation (C) Disinfection (D) Sedimentation

Last Answer : (C) Disinfection

Very fine suspended and colloidal impurities are removed from water by a process called (A) Sedimentation (B) Coagulation (C) Disinfection (D) Softening

Description : Very fine suspended and colloidal impurities are removed from water by a process called (A) Sedimentation (B) Coagulation (C) Disinfection (D) Softening

Last Answer : (B) Coagulation

If Organic sources of carcinogenic compounds in water persist even after chlorination, then what is the correct sequence among treatment processes listed below if all these are considered compulsory ? 1. Coagulation 2. Sedimentation 3. Filtration in general 4. Activated carbon bed filtration 5. Flocculation 6. Chlorination a) 4-5-3-2-6 and 1 b) 1-2-3-4-5 and 6 c) 4- 2- 3- 1- 5 and 6 d) 1-5-2-3-4 and 6

Description : If Organic sources of carcinogenic compounds in water persist even after chlorination, then what is the correct sequence among treatment processes listed below if all these are considered compulsory ? 1. Coagulation 2. Sedimentation 3. Filtration in ... c) 4- 2- 3- 1- 5 and 6 d) 1-5-2-3-4 and 6

Last Answer : d) 1-5-2-3-4 and 6

Rapid sand filter (A) Should be preceded by coagulation and sedimentation (B) Uses rapid sand as filter media(C) Is used after slow sand filtering has been done (D) Can combine disinfection also

Description : Rapid sand filter (A) Should be preceded by coagulation and sedimentation (B) Uses rapid sand as filter media (C) Is used after slow sand filtering has been done (D) Can combine disinfection also

Last Answer : (A) Should be preceded by coagulation and sedimentation

The pair(s) which will show displacement reaction is/are (i) NaCl solution and copper metal (ii) AgNO3 solution and copper metal (iii) Al2(SO4)3 solution and magnesium metal (iv) ZnSO4 solution and iron metal (a) (ii) only (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (ii)

Description : The pair(s) which will show displacement reaction is/are (i) NaCl solution and copper metal (ii) AgNO3 solution and copper metal (iii) Al2(SO4)3 solution and magnesium metal (iv) ZnSO4 solution and iron metal (a) (ii) only (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (ii)

Last Answer : (c) (iii) and (iv)

Pick out the true statement pertaining to water treatment. (A) Slow sand filters can remove colour completely (B) Activated carbon can be used for taste & odour control without subsequent filtration (C) Application of activated carbon reduces the temporary hardness of water (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Description : Pick out the true statement pertaining to water treatment. (A) Slow sand filters can remove colour completely (B) Activated carbon can be used for taste & odour control without subsequent filtration ... of water (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Last Answer : (D) Normally, the turbidity is removed by adding a coagulant prior to sedimentation

Radioactive substances present in the polluted water stream can be removed by (A) Biological oxygen treatment (B) Coagulation and filtration (C) Adsorption in ion exchange materials (D) None of these

Description : Radioactive substances present in the polluted water stream can be removed by (A) Biological oxygen treatment (B) Coagulation and filtration (C) Adsorption in ion exchange materials (D) None of these

Last Answer : (C) Adsorption in ion exchange materials

During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank. (A) Filtration (B) Digestion (C) Sedimentation (D) Both (B) and (C)

Description : During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank. (A) Filtration (B) Digestion (C) Sedimentation (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Muddy water is treated with alum in purification process, it is termed as : (1) emulsification (2) absorption (3) adsorption (4) coagulation

Description : Muddy water is treated with alum in purification process, it is termed as : (1) emulsification (2) absorption (3) adsorption (4) coagulation

Last Answer : (4) coagulation Explanation: Natural and wastewater contain small particulates that are suspended in water forming a colloid. These particles carry the same charges, and repulsion prevents them from combining into larger particulates to settle.

Muddy water is treated with alum in purification process, itis termed as : (1) emulsification (2)absorption (3) adsorption (4) coagulation

Description : Muddy water is treated with alum in purification process, itis termed as : (1) emulsification (2)absorption (3) adsorption (4) coagulation

Last Answer : coagulation

Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the (A) Coagulation (B) Flocculation (C) Sedimentation (D) Clarification

Description : Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the (A) Coagulation (B) Flocculation (C) Sedimentation (D) Clarification

Last Answer : (C) Sedimentation

During treatment of water, sedimentation is done (A) Before filtration (B) After filtration (C) Simultaneously with filtration (D) Along with chlorination

Description : During treatment of water, sedimentation is done  (A) Before filtration  (B) After filtration  (C) Simultaneously with filtration  (D) Along with chlorination 

Last Answer : (A) Before filtration 

Before discharging the foul sewage into rivers, it is generally treated by (a) screening (b) sedimentation (c) Oxidation (d) sludge digestion and disinfection (e) all the above*

Description : Before discharging the foul sewage into rivers, it is generally treated by (a) screening (b) sedimentation (c) Oxidation (d) sludge digestion and disinfection (e) all the above*

Last Answer : e) all the above*

The process opposite to 'dispersion' is termed as the(A) Flocculation(B) Sedimentation(C) Filtration(D) None of these

Description : The process opposite to 'dispersion' is termed as the (A) Flocculation (B) Sedimentation (C) Filtration (D) None of these

Last Answer : (A) Flocculation

Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal (A) By chemical coagulation (B) In sedimentation tanks equipped with mechanical scrapper (C) In vacuum filter (D) In clarifiers

Description : Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal (A) By chemical coagulation (B) In sedimentation tanks equipped with mechanical scrapper (C) In vacuum filter (D) In clarifiers

Last Answer : (B) In sedimentation tanks equipped with mechanical scrapper

Temporary hardness of water can be removed by (A) Addition of alum (a coagulant) (B) Boiling (C) Filtration (through gravity sand filter) (D) Addition of lime

Description : Temporary hardness of water can be removed by (A) Addition of alum (a coagulant) (B) Boiling (C) Filtration (through gravity sand filter) (D) Addition of lime

Last Answer : (B) Boiling

Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted waterstream?(A) Sedimentation tank(B) Circular clarifier(C) Mechanical flocculation(D) Chemical coagulation

Description : Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted waterstream? (A) Sedimentation tank (B) Circular clarifier (C) Mechanical flocculation (D) Chemical coagulation

Last Answer : (D) Chemical coagulation

Alum stops bleeding in minor cuts because of – (1) solvation (2) emulsion (3) dialysis (4) coagulation

Description : Alum stops bleeding in minor cuts because of – (1) solvation (2) emulsion (3) dialysis (4) coagulation

Last Answer : (4) coagulation Explanation: Coagulation is the process by which blood forms clots. It is an important part of homeostasis, the cessation of blood loss from a damaged vessel, wherein a ... coagulation can lead to an increased risk of bleeding (hemorrhage) or obstructive clotting (thrombosis).

Alum stops bleeding in minor cuts because of (1) solvation (2) emulsion (3) dialysis (4) coagulation

Description : Alum stops bleeding in minor cuts because of (1) solvation (2) emulsion (3) dialysis (4) coagulation

Last Answer : coagulation

The process of removing calcium and magnesium from hard water is known as – (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Description : The process of removing calcium and magnesium from hard water is known as – (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Last Answer : (4) Water softening Explanation: Water softening is the reduction of the concentration of calcium, magnesium, and certain other metal cations in hard water. Hardness ions dissolved in water can cause a ... use depend on an ion-exchange resin in which hardness ions are exchanged for sodium ions.

The main process to purify water by filtration, is (A) Mechanical straining (B) Flocculation and sedimentation (C) Biological metabolism (D) All the above

Description : The main process to purify water by filtration, is (A) Mechanical straining (B) Flocculation and sedimentation (C) Biological metabolism (D) All the above

Last Answer : (D) All the above

The process of passing water through beds of granular materials, is called (A) Screening (B) Sedimentation (C) Filtration (D) None of these

Description : The process of passing water through beds of granular materials, is called  (A) Screening  (B) Sedimentation  (C) Filtration  (D) None of these 

Last Answer : (C) Filtration 

The process of removing calcium and magnesium from hard water is known as (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Description : The process of removing calcium and magnesium from hard water is known as (1) Sedimentation (2) Filtration (3) Flocculation (4) Water softening

Last Answer :  Water softening

The temporary hardness of water can be removed by (A) Boiling (B) Adding lime (C) Adding alum (D) Filtration

Description : The temporary hardness of water can be removed by (A) Boiling (B) Adding lime (C) Adding alum (D) Filtration

Last Answer : (A) Boiling

Iron & manganese present in the polluted water is removed by (A) Simple filtration (B) Oxidation followed by settling & filtration (C) Chemical coagulation (D) Chlorination only

Description : Iron & manganese present in the polluted water is removed by (A) Simple filtration (B) Oxidation followed by settling & filtration (C) Chemical coagulation (D) Chlorination only

Last Answer : (B) Oxidation followed by settling & filtration

Soluble silica present in boiler feed water can be removed by (A) Coagulation (B) Filtration (C) Anion exchanger (D) Preheating it

Description : Soluble silica present in boiler feed water can be removed by (A) Coagulation (B) Filtration (C) Anion exchanger (D) Preheating it

Last Answer : (C) Anion exchanger

Dissolved carbon dioxide, can be removed from the supply main by (A) Sedimentation (B) Aeration (C) Chlorination (D) Coagulation

Description : Dissolved carbon dioxide, can be removed from the supply main by (A) Sedimentation (B) Aeration (C) Chlorination (D) Coagulation

Last Answer : (B) Aeration

Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by (A) Chemical coagulation (B) Floatation & skimming (C) Centrifugation (D) Ultra filtration

Description : Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by (A) Chemical coagulation (B) Floatation & skimming (C) Centrifugation (D) Ultra filtration

Last Answer : (A) Chemical coagulation

To remove very fine suspended particles from water, the method adopted is (A) Screening (B) Sedimentation (C) Boiling (D) Filtration

Description : To remove very fine suspended particles from water, the method adopted is  (A) Screening  (B) Sedimentation  (C) Boiling  (D) Filtration

Last Answer : To remove very fine suspended particles from water, the method adopted is  (A) Screening  (B) Sedimentation  (C) Boiling  (D) Filtration

Why Filtration is a better method than simple sedimentation and decantation?

Description : Why Filtration is a better method than simple sedimentation and decantation?

Last Answer : Filtration can remove solid particles as small as 1 micron.Simply decanting, or allowing solids to settle - will not removethe smallest particles.

Iodine can be separated from a mixture of Iodine and Potassium Chloride by - (1) Filtration (2) Sublimation (3) Distillation (4) Sedimentation

Description : Iodine can be separated from a mixture of Iodine and Potassium Chloride by - (1) Filtration (2) Sublimation (3) Distillation (4) Sedimentation

Last Answer : (2) Sublimation Explanation: Iodine can be separated from a mixture of Iodine and Potassium Chloride by Sublimation. Sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

Iodine can be separated from a mixture of Iodine and Potassium Chloride by – (1) sedimentation (2) filtration (3) sublimation (4) distillation

Description : Iodine can be separated from a mixture of Iodine and Potassium Chloride by – (1) sedimentation (2) filtration (3) sublimation (4) distillation

Last Answer : (3) sublimation Explanation: Iodine is well known to sublime (change from solid to gas without becoming liquid in between) when heated. However sodium chloride has a melting point much higher ... by using a sublimation apparatus, with solid iodine collected by condensation on a cold surface.

Iodine can be separated from a mixture of Iodine and Potassium Chloride by (1) sedimentation (2) filtration (3) sublimation (4) distillation

Description : Iodine can be separated from a mixture of Iodine and Potassium Chloride by (1) sedimentation (2) filtration (3) sublimation (4) distillation

Last Answer : sublimation

Irradiation of water by ultraviolet light of suitable wavelength iscommonly used for disinfection of water in (A) Food industry (B) Municipal sewage treatment (C) Petroleum refinery (D) Iron & steel plant

Description : Irradiation of water by ultraviolet light of suitable wavelength iscommonly used for disinfection of water in (A) Food industry (B) Municipal sewage treatment (C) Petroleum refinery (D) Iron & steel plant

Last Answer : (A) Food industry

Chloramines are used in water treatment for (A) Disinfection and control of taste & odour (B) Corrosion control (C) Removing turbidity (D) Control of bacteria

Description : Chloramines are used in water treatment for (A) Disinfection and control of taste & odour (B) Corrosion control (C) Removing turbidity (D) Control of bacteria

Last Answer : (A) Disinfection and control of taste & odour

The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine

Description : The most commonly used chemical coagulant in water treatment is (A) Ferrous sulphate (B) Alum (C) Lime (D) Hydrazine

Last Answer : (B) Alum

Which is the most widely used coagulant for the treatment of turbid water? (A) Alum (aluminium sulphate) (B) Lime (C) Ferric chloride (D) Sodium aluminate

Description : Which is the most widely used coagulant for the treatment of turbid water? (A) Alum (aluminium sulphate) (B) Lime (C) Ferric chloride (D) Sodium aluminate

Last Answer : (A) Alum (aluminium sulphate)

In water treatment plant, use of chloramines ensures (1) taste and odour control (2) weed control in reservoirs (3) disinfection (4) removal of permanent hardness

Description : In water treatment plant, use of chloramines ensures (1) taste and odour control (2) weed control in reservoirs (3) disinfection (4) removal of permanent hardness

Last Answer : (3) disinfection Explanation: The particular type of chloramine used in drinking water disinfection is called monochloramine. Chloramine is chiefly a secondary disinfectant that are added to water that has already been disinfected with a primary disinfectant, often chlorine

In water treatment plant, use of chloramines ensures _____ (1) taste and odour control (2) weed control in reservoirs (3) disinfection (4) removal of permanent hardness

Description : In water treatment plant, use of chloramines ensures _____ (1) taste and odour control (2) weed control in reservoirs (3) disinfection (4) removal of permanent hardness

Last Answer : disinfection

In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process (A) Uses lower grade phosphate rock (B) Requires lower capital investment in the plant(C) Produces lower purity acid(D) Is very costly

Description : In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process (A) Uses lower grade phosphate rock (B) Requires lower capital investment in the plant (C) Produces lower purity acid (D) Is very costly

Last Answer : (C) Produces lower purity acid

During sewage treatment, effluent from which one of the following treatment units has minimum wt/vol amount of suspended solids? (a) Detritus channel (b) Primary sedimentation tank (c) Secondary sedimentation tank (d) Activated sludge process aeration tank

Description : During sewage treatment, effluent from which one of the following treatment units has minimum wt/vol amount of suspended solids? (a) Detritus channel (b) Primary sedimentation tank (c) Secondary sedimentation tank (d) Activated sludge process aeration tank

Last Answer : (d) Activated sludge process aeration tank

Infective bacteria in water is killed by the __________ process. (A) Sterilisation (B) Aeration (C) Disinfection (D) None of these

Description : Infective bacteria in water is killed by the __________ process. (A) Sterilisation (B) Aeration (C) Disinfection (D) None of these

Last Answer : (A) Sterilisation

Which of the following is the most widely used disinfectant in water treatment? (A) Chlorine (B) Irradiation of water by ultraviolet light (C) Cation exchanger (D) Coagulation

Description : Which of the following is the most widely used disinfectant in water treatment? (A) Chlorine (B) Irradiation of water by ultraviolet light (C) Cation exchanger (D) Coagulation

Last Answer : (A) Chlorine

In sewage treatment, its sedimentation is speeded up by commonly adding (A) Hydrochloric acid (B) Lime (C) Copper sulphate (D) Sodium sulphate

Description : In sewage treatment, its sedimentation is speeded up by commonly adding (A) Hydrochloric acid (B) Lime (C) Copper sulphate (D) Sodium sulphate

Last Answer : (B) Lime

Q No: 291 The coagulant widely used for sewage treatment, is A. Alum B. Ferric chloride C. Ferric sulphate D. Chlorinated copperas

Description : Q No: 291 The coagulant widely used for sewage treatment, is A. Alum B. Ferric chloride C. Ferric sulphate D. Chlorinated copperas

Last Answer : ANS: B

How many atoms in 4 al2(so3)3?

Description : How many atoms in 4 al2(so3)3?

Last Answer : Need answer

What is the formula mass of aluminum oxalate Al2(C2O4)3?

Description : What is the formula mass of aluminum oxalate Al2(C2O4)3?

Last Answer : The molar mass of aluminium oxalate is 318,017 g.