Standard process of chlorination of water, is done by (A) Plain chlorination (B) Pre-chlorination (C) Post-chlorination (D) Double chlorination

Standard process of chlorination of water, is done by
(A) Plain chlorination
(B) Pre-chlorination
(C) Post-chlorination
(D) Double chlorination
by

1 Answer

Answer :

(C) Post-chlorination
by

Related questions

De-chlorination is followed by (A) Post-chlorination (B) Pre-chlorination (C) Double-chlorination (D) Super-chlorination

Description : De-chlorination is followed by (A) Post-chlorination (B) Pre-chlorination (C) Double-chlorination (D) Super-chlorination

Last Answer : (D) Super-chlorination

Raw water treated with only chlorine, is known as (A) Plain chlorination (B) Pre-chlorination (C) First-chlorination (D) De-chlorination

Description : Raw water treated with only chlorine, is known as (A) Plain chlorination (B) Pre-chlorination (C) First-chlorination (D) De-chlorination

Last Answer : (A) Plain chlorination

For plain chlorination of water, the quantity of chlorine used, is (A) 0.1 mg/litre (B) 0.2 mg/litre (C) 0.3 mg/litre (D) 0.5 mg/litre

Description : For plain chlorination of water, the quantity of chlorine used, is (A) 0.1 mg/litre (B) 0.2 mg/litre (C) 0.3 mg/litre (D) 0.5 mg/litre

Last Answer : (D) 0.5 mg/litre

Plain chlorination is used for water (A) Obtained from clear lakes (B) Consumed during emergencies (C) Supplies to armies during war (D) All the above

Description : Plain chlorination is used for water  (A) Obtained from clear lakes  (B) Consumed during emergencies  (C) Supplies to armies during war  (D) All the above 

Last Answer : (D) All the above 

Which of the following reasons are responsible for adoption of post-chlorination of water? 1. Chlorine demand is reduced. 2. Possibility of taste and odour formation is reduced. 3. Possibility of carcinogenic compounds is reduced. 4. Chloramines are formed. (a) 1, 2, 3 & 4 (b) 1, 2 & 3 only (c) 1, & 4 only (d) 2, 3 & 4 only

Description : Which of the following reasons are responsible for adoption of post-chlorination of water? 1. Chlorine demand is reduced. 2. Possibility of taste and odour formation is reduced. 3. Possibility of carcinogenic compounds is reduced. 4. Chloramines ... b) 1, 2 & 3 only (c) 1, & 4 only (d) 2, 3 & 4 only

Last Answer : (c) 1, & 4 only

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 

The best process of disinfection of public water supply, is by (A) Boiling (B) Chlorination (C) Adding lime (D) Adding ozone

Description : The best process of disinfection of public water supply, is by  (A) Boiling  (B) Chlorination  (C) Adding lime  (D) Adding ozone 

Last Answer : (B) Chlorination 

Chlorination of water is done for the removal of A. Bacterias B. Suspended solids C. Sediments D. Hardness

Description : Chlorination of water is done for the removal of A. Bacterias B. Suspended solids C. Sediments D. Hardness

Last Answer : ANS: A

Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with (A) Karbate (B) Lead or glass (C) Fireclay bricks (D) PVC

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Chlorination of water does not remove (A) Ammonia content (B) B.O.D. (C) Organic matter content (D) Dissolved oxygen

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Last Answer : (D) Dissolved oxygen

The most commonly used chemical for de-chlorination of water, is (A) Sodium thiosulphate (B) Sodium bisulphate (C) Sodium sulphite (D) Sulphur-dioxide

Description : The most commonly used chemical for de-chlorination of water, is  (A) Sodium thiosulphate  (B) Sodium bisulphate  (C) Sodium sulphite  (D) Sulphur-dioxide 

Last Answer : (C) Sodium sulphite 

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

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

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

At break point of chlorination, (A) Chlorine is used to oxidise (B) Residual chloride is zero (C) Residual chloride is maximum (D) Residual chlorine reappears

Description : At break point of chlorination, (A) Chlorine is used to oxidise (B) Residual chloride is zero (C) Residual chloride is maximum (D) Residual chlorine reappears

Last Answer : (D) Residual chlorine reappears

At break point of chlorination, (A) Chlorine is used to oxidise (B) Residual chloride is zero (C) Residual chloride is maximum (D) Residual chlorine reappears

Description : At break point of chlorination,  (A) Chlorine is used to oxidise  (B) Residual chloride is zero  (C) Residual chloride is maximum  (D) Residual chlorine reappears 

Last Answer : (D) Residual chlorine reappears 

'Chlorination' is 1. A process of converting chlorides into chlorine 2. Adding small amounts of chlorine to impure water 3. A chemical reaction in which chlorine is formed 4. An addition reaction of ethylene and chlorine The correct statements are: (a) 1 and 4 (b) 2 and 4 (c) 3 and 4 (d) 1 and 2

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Last Answer : Ans:(b)

Iron and manganese present as pollutants in water cannot be re-moved by - (1) oxidation followed by settling and filtration (2) chlorination (3) ion exchange process (4) lime soda process or manganese zeolite process

Description : Iron and manganese present as pollutants in water cannot be re-moved by - (1) oxidation followed by settling and filtration (2) chlorination (3) ion exchange process (4) lime soda process or manganese zeolite process

Last Answer : (2) chlorination Explanation: Water chlorination is the process of adding chlorine or hypochlorite to water. This method is used to kill certain bacteria and other microbes in tap water as chlorine is ... is used to prevent the spread of waterborne diseases such as cholera, dysentery, typhoid etc.

Iron & manganese present as pollutant in water cannot be removed by (A) Ion exchange process (B) Oxidation followed by settling & filtration (C) Lime soda process or manganese zeolite process(D) Chlorination

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Iron and manganese present as pollutants in water cannot be removed by_____ (1) oxidation followed by settling and filtration (2) chlorination (3) ion exchange process (4) lime soda process or manganese zeolite process

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Pick out the wrong statement. (A) For the manufacture of styrene, the major raw materials are benzene and ethylene (B) One important copolymer of styrene is SBR, which is widely used in the manufacture of automobile tyres (C) Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis (D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

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Pre mailing activities are done at a) Business Post centre b) Press sorting office c) Head post office d) None of these

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Pick up the correct statement from the following: (A) Plain cement concrete is equally strong in compression as well as in tension (B) Slump test is performed to check concrete strength (C) Curing of concrete is done for proper compaction of cement (D) Fineness modulus is the index number expressing the relative sizes of both coarse and fine aggregates

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Pre-stress loss due to friction occurs (A) Only in post-tensioned beams (B) Only in pre-tensioned beams (C) In both post-tensioned and pre-tensioned beams (D) None of the above

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)Which phase of the Acquisition Process Cycle does source qualifications reside? 1. Pre-Award 2. Award 3. Post Award 4. Origination

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Chlorination of treated waste water is required for

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Chlorination of treated waste water is required for

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What positional isomers of pentachlorobenzene are formed during chlorination of benzene?

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