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

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

1 Answer

Answer :

(C) Disinfection
by

Related questions

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

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

Last Answer : (B) Coagulation

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

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

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

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

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

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*

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

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

Disinfection of water with ozone is not good because (A) It vanishes before water reaches the consumers (B) It removes the colour, taste and odour from water as bacterias (C) It adds taste to the water(D) It is more efficient than chlorine in killing bacterias

Description : Disinfection of water with ozone is not good because  (A) It vanishes before water reaches the consumers  (B) It removes the colour, taste and odour from water as bacterias  (C) It adds taste to the water (D) It is more efficient than chlorine in killing bacterias 

Last Answer : (D) It is more efficient than chlorine in killing bacterias 

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

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

Dose of chlorine for disinfection of water is about __________ mg/litre of water. (A) 0.01 (B) 0.1 (C) 0.3 (D) 1

Description : Dose of chlorine for disinfection of water is about __________ mg/litre of water. (A) 0.01 (B) 0.1 (C) 0.3 (D) 1

Last Answer : (D) 1

Removal of __________ results from the disinfection of water. (A) Turbidity(B) Odour(C) Hardness(D) Bacteria

Description : Removal of __________ results from the disinfection of water. (A) Turbidity (B) Odour (C) Hardness (D) Bacteria

Last Answer : (D) Bacteria

Which of the following procedures will not achieve sterilization: A. Hot air at 160ºC for 90mins B. Boiling water at 100ºC for 2 hours C. Autoclave at 121ºC under 15psi for 20 mins D. Dry heat at 177ºC for 60mins E. All of the above will achieve sterilisation

Description : Which of the following procedures will not achieve sterilization: A. Hot air at 160ºC for 90mins B. Boiling water at 100ºC for 2 hours C. Autoclave at 121ºC under 15psi for 20 mins D. Dry heat at 177ºC for 60mins E. All of the above will achieve sterilisation

Last Answer : B. Boiling water at 100ºC for 2 hours

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 

As part of a voluntary sterilisation, would it be immoral to harvest human eggs and sell them as human caviar?

Description : As part of a voluntary sterilisation, would it be immoral to harvest human eggs and sell them as human caviar?

Last Answer : And what about human “rocky mountain oysters”?

Assertion : Vasectomy is considered in permanent sterilisation method in male . Reason : It show immediate sterilisation after procedure .

Description : Assertion : Vasectomy is considered in permanent sterilisation method in male . Reason : It show immediate sterilisation after procedure .

Last Answer : Assertion : Vasectomy is considered in permanent sterilisation method in male . Reason : It show immediate ... . If both Assertion & Reason are False.

Tubectomy is a method of sterilisation in which (a) small part of the fallopian tube is removed or tied up (b) ovaries are removed surgically (c) small part of vas deferens is removed or tied up (d) uterus is removed surgically.

Description : Tubectomy is a method of sterilisation in which (a) small part of the fallopian tube is removed or tied up (b) ovaries are removed surgically (c) small part of vas deferens is removed or tied up (d) uterus is removed surgically.

Last Answer : (a) small part of the fallopian tube is removed or tied up

The sterilisation of Gutta Percha is achieved by: a. Heat. b. Chemical sterilisation. c. Flame. d. Boiling. e. Autoclave.

Description : The sterilisation of Gutta Percha is achieved by: a. Heat. b. Chemical sterilisation. c. Flame. d. Boiling. e. Autoclave.

Last Answer : b. Chemical sterilisation.

The sterilisation of Gutta Percha is achieved by: A. Heat B. Chemical sterilisation C. Flame D. Boiling E. Autoclave

Description : The sterilisation of Gutta Percha is achieved by:  A. Heat  B. Chemical sterilisation  C. Flame  D. Boiling  E. Autoclave 

Last Answer : B. Chemical sterilisation 

What is the mode of action of autoclaving “Moist sterilisation”: A. Moist heat sterilization B. Protein denaturation

Description : What is the mode of action of autoclaving “Moist sterilisation”: A. Moist heat sterilization B. Protein denaturation

Last Answer : A. Moist heat sterilization

Define sterilisation and classify methods of sterilisation.

Description : Define sterilisation and classify methods of sterilisation.

Last Answer : Definition: Sterilizations is the process of complete destruction of all microorganisms along with their spores present in the system.  Methods of sterilization:  I. Physical methods:  1. Dry heat ... . Seitz filters  3. Sintered glass filters 4. Sintered metal filters  5. Membrane filters

Classify the methods of sterilisation with example.

Description : Classify the methods of sterilisation with example.

Last Answer : Method of sterilization :-  A)Physical method Dry heat sterilization e.g. hot air oven Moist heat sterilization e.g. Autoclave Radiation sterilization a) Use of ultra violet rays ... Ceramic filters Seitz glass filter Sintered glass filters Sintered metal filters Membrane filters

In H.T.S.T. pasteurization, which one of the following organisms is chosen as index organism for killing? 1) S.thermophilus 2) S.lactis 3) B.subtilis 4) M.tuberculosis

Description : In H.T.S.T. pasteurization, which one of the following organisms is chosen as index organism for killing? 1) S.thermophilus 2) S.lactis 3) B.subtilis 4) M.tuberculosis

Last Answer : 1) S.thermophilus

In a sedimentation tank, the detention period for water ranges from __________ hours. (A) 2 to 4 (B) 8 to 12 (C) 16 to 20 (D) 24 to 32

Description : In a sedimentation tank, the detention period for water ranges from __________ hours. (A) 2 to 4 (B) 8 to 12 (C) 16 to 20 (D) 24 to 32

Last Answer : (A) 2 to 4

The process of destroying pathogens on an object is _____. a. Disinfection b. Sanitization c. Sepsis d. Antiseptic

Description : The process of destroying pathogens on an object is _____. a. Disinfection b. Sanitization c. Sepsis d. Antiseptic

Last Answer : a. Disinfection

Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a __________ operation. (A) Clarification(B) Sedimentation(C) Flocculation(D) Classification

Description : Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a __________ operation. (A) Clarification (B) Sedimentation (C) Flocculation (D) Classification

Last Answer : (D) Classification

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)

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

Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of (A) Ozone and iodine (B) Chlorine or its compounds (C) Ultraviolet light for irradiation of water (D) All (A), (B) & (C)

Description : Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of (A) Ozone and iodine (B) Chlorine or its compounds (C) Ultraviolet light for irradiation of water (D) All (A), (B) & (C)

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

The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? (A) Chlorine (B) Alkalis (C) Benzene hexachloride (D) Alkyl benzene sulphonate (ABS)

Description : The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? (A) Chlorine (B) Alkalis (C) Benzene hexachloride (D) Alkyl benzene sulphonate (ABS)

Last Answer : (A) Chlorine

. Disinfection of water is done to remove (A) Color (B) Bad taste (C) Foul odour (D) Bacteria

Description : . Disinfection of water is done to remove (A) Color (B) Bad taste (C) Foul odour (D) Bacteria

Last Answer : (D) Bacteria

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

common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganat

Description : common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganat

Last Answer : Option D

A common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganate

Description : A common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganate

Last Answer : Option D

Widely used method for the conditioning of boiler feed water is the (A) Cold lime process (B) Coagulation (C) Hot-lime soda process (D) Sequestration

Description : Widely used method for the conditioning of boiler feed water is the (A) Cold lime process (B) Coagulation (C) Hot-lime soda process (D) Sequestration

Last Answer : (C) Hot-lime soda process

Gravity settling process is not involved in the working of a (A) Hydrocyclone (B) Classifier (C) Dorr-thickener (D) Sedimentation tank

Description : Gravity settling process is not involved in the working of a (A) Hydrocyclone (B) Classifier (C) Dorr-thickener (D) Sedimentation tank

Last Answer : (A) Hydrocyclone

If a force greater than that of gravity is used to separate solids & fluidsof different densities, the process is termed as the(A) Sedimentation(B) Flocculation(C) Dispersion(D) Centrifugation

Description : If a force greater than that of gravity is used to separate solids & fluidsof different densities, the process is termed as the (A) Sedimentation (B) Flocculation (C) Dispersion (D) Centrifugation

Last Answer : (D) Centrifugation

The process by which fine solids is removed from liquids is termed as (A) Decantation (B) Flocculation (C) Sedimentation (D) Classification

Description : The process by which fine solids is removed from liquids is termed as (A) Decantation (B) Flocculation (C) Sedimentation (D) Classification

Last Answer : (C) Sedimentation

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

Which of the following is not used for disinfection of drinking water?

Description : Which of the following is not used for disinfection of drinking water?

Last Answer : Which of the following is not used for disinfection of drinking water? A. Chlorine B. Ozone C. Chloramine D. Phenyl

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

The amount of Chlorine available in water after disinfection is called as – (1) free chlorine (2) residual chlorine (3) free available chlorine (4) combined available chlorine

Description : The amount of Chlorine available in water after disinfection is called as – (1) free chlorine (2) residual chlorine (3) free available chlorine (4) combined available chlorine

Last Answer : (2) residual chlorine Explanation: The word "residual" means "remainder" or "that which is left", and as the name suggests the chlorine residual is measure of the amount of chlorine ... system. Tests for chlorine residual are probably the most frequently performed tests at water treatment plants.

Disinfection of drinking water, is done to remove (A) Odour (B) Bacterias (C) Turbidity (D) Colour

Description : Disinfection of drinking water, is done to remove (A) Odour (B) Bacterias (C) Turbidity (D) Colour

Last Answer : (B) Bacterias

Disinfection of drinking water is done to remove (A) Turbidity (B) Odour (C) Colour (D) Bacterias

Description : Disinfection of drinking water is done to remove (A) Turbidity (B) Odour (C) Colour (D) Bacterias

Last Answer : (D) Bacterias

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

The amount of chlorine available in water after disinfection is called as (1) free chlorine (2) residual chlorine (3) free available chlorine (4) combined available chlorine

Description : The amount of chlorine available in water after disinfection is called as (1) free chlorine (2) residual chlorine (3) free available chlorine (4) combined available chlorine

Last Answer : residual chlorine

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