Zeolite used in water softening process (cation exchange) is regenerated by washing with (A) Brine (B) Chloramines (C) Sodium bisulphite (D) Liquid chlorines

Zeolite used in water softening process (cation exchange) is regenerated
by washing with
(A) Brine
(B) Chloramines
(C) Sodium bisulphite
(D) Liquid chlorines
by

1 Answer

Answer :

(A) Brine
by

Related questions

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of (A) Calcium sulphate (B) Sodium chloride(C) Sodium sulphate(D) Magnesium chloride

Description : Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of (A) Calcium sulphate (B) Sodium chloride (C) Sodium sulphate (D) Magnesium chloride

Last Answer : (B) Sodium chloride

Pick out the false statement pertaining to water treatment(A) Aeration of water is effective in CO2removal(B) The zeolite water softening process reduces the hardness of water by notmore than 50%(C) Sodium sulphate or sodium carbonate do not cause hardness in water(D) Water with pH value less than 7, is acidic.

Description : Pick out the false statement pertaining to water treatment. (A) Aeration of water is effective in CO2 removal (B) The zeolite water softening process reduces the hardness of water by not more than 50% (C ... carbonate do not cause hardness in water (D) Water with pH value less than 7, is acidic

Last Answer : (B) The zeolite water softening process reduces the hardness of water by not more than 50%

Softening of hard water is done using sodium aluminium silicate (zeolite) . This causes

Description : Softening of hard water is done using sodium aluminium silicate (zeolite) . This causes

Last Answer : Softening of hard water is done using sodium aluminium silicate (zeolite) . This causes A. adsorption of `Ca^(2 ... both (A) and (B) D. none of these

Draw the diagram for zeolite process used for the softening of boiler feed water.

Description : Draw the diagram for zeolite process used for the softening of boiler feed water.

Last Answer : Zeolite process:

The purpose of adding Na2CO3 to water of low alkalinity is to (A) Permit the use of alum as a coagulant (B) Increase the softening capacity of zeolite (C) Facilitate easy regeneration of zeolite (D) All (A), (B) and (C)

Description : The purpose of adding Na2CO3 to water of low alkalinity is to (A) Permit the use of alum as a coagulant (B) Increase the softening capacity of zeolite (C) Facilitate easy regeneration of zeolite (D) All (A), (B) and (C)

Last Answer : (A) Permit the use of alum as a coagulant

Presence of H2S in raw water (to be chlorinated) results in the (A) Reduced softening capacity of zeolite (B) Increased dosage of chlorine to provide a disinfecting residual in the water (C) Easy removal of its hardness (D) None of these

Description : Presence of H2S in raw water (to be chlorinated) results in the (A) Reduced softening capacity of zeolite (B) Increased dosage of chlorine to provide a disinfecting residual in the water (C) Easy removal of its hardness (D) None of these

Last Answer : (B) Increased dosage of chlorine to provide a disinfecting residual in the water

Cation exchanger is regenerated usually with (A) NaOH (B) H2SO4 (C) Hydrazine (D) Alum solution

Description : Cation exchanger is regenerated usually with (A) NaOH (B) H2SO4 (C) Hydrazine (D) Alum solution

Last Answer : (B) H2SO4

Cooking liquor in case of sulphite process is (A) Sodium sulphite and sodium bisulphite (B) Magnesium sulphite and free SO2 in acid medium (C) Magnesium sulphate and magnesium bicarbonate (D) None of these

Description : Cooking liquor in case of sulphite process is (A) Sodium sulphite and sodium bisulphite (B) Magnesium sulphite and free SO2 in acid medium (C) Magnesium sulphate and magnesium bicarbonate (D) None of these

Last Answer : (A) Sodium sulphite and sodium bisulphite

Sodium bisulphite is used for __________ water. (A) Deaeration (B) Dechlorination (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Sodium bisulphite is used for __________ water. (A) Deaeration (B) Dechlorination (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

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

Description : 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

Last Answer : (D) Chlorination

The most commonly used substance to speed up the sedimentation of sewage is (A) Lime (B) Sulphuric acid (C) Chlorine (D) Sodium bisulphite

Description : The most commonly used substance to speed up the sedimentation of sewage is (A) Lime (B) Sulphuric acid (C) Chlorine (D) Sodium bisulphite

Last Answer : (A) Lime

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 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

Description : 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

Last Answer : chlorination

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

“Rate of softening of water in Ion Exchange method is high,” Give reason.

Description : “Rate of softening of water in Ion Exchange method is high,” Give reason.

Last Answer : Rate of softening of water in ion exchange method is high because, cation exchange beds and anions exchange beds are used this process, which remove all the hardness causing substances. It also removes alkali metals. This process is useful for acidic as well as alkaline water. 

Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins. (A) Epoxy (B) Phenol formaldehyde (C) Urea formaldehyde (D) Melamine formaldehyde

Description : Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins. (A) Epoxy (B) Phenol formaldehyde (C) Urea formaldehyde (D) Melamine formaldehyde

Last Answer : (C) Urea formaldehyde

Cation exchange resins used in water treatment is made from __________ resin. (A) Urea formaldehyde (B) Epoxy (C) Amino (D) Phenolic

Description : Cation exchange resins used in water treatment is made from __________ resin. (A) Urea formaldehyde (B) Epoxy (C) Amino (D) Phenolic

Last Answer : (A) Urea formaldehyde

__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine. (A) Chlorine (B) Ammonium chloride (C) Sodium carbonate (D) Sodium bi-carbonate

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Last Answer : (A) Chlorine

In water treatment plant, zeolite process is used to remove the __________ of water. (A) Acidity (B) Alkalinity (C) Hardness (D) Iron & zinc

Description : In water treatment plant, zeolite process is used to remove the __________ of water. (A) Acidity (B) Alkalinity (C) Hardness (D) Iron & zinc

Last Answer : (C) Hardness

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

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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

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Last Answer : (c) 1, & 4 only

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

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Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at 35°C (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C (C) Boiling brine kept in open vessel when the bottom surface temperature of the vessel is maintained constant at 180°C (D) A sub-cooled refrigerant liquid at 8°C flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C

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Last Answer : (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C

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Last Answer :  Fruit Juices

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Description : Brine is an a) aqueous solution of sodium hydroxide b) aqueous solution of sodium carbonate c) aqueous solution of sodium chloride d) aqueous solution of sodium bicarbonate

Last Answer : c) aqueous solution of sodium chloride

When any solution passess through a cation exchange resin that is in acidic form, H ion of the resin is replaced by cations of the solution. A solutio

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Permanent hardness of water can be removed by (A) Adding alum (B) Adding lime (C) Adding chlorine (D) Zeolite process

Description : Permanent hardness of water can be removed by  (A) Adding alum  (B) Adding lime  (C) Adding chlorine  (D) Zeolite process

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Description : Viscose rayon is (A) Cellulose nitrate (B) Regenerated cellulose nitrate (C) Regenerated cellulose acetate (D) None of these

Last Answer : (D) None of these

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Description : Celluloid is (A) Cellulose acetate (B) Regenerated cellulose (C) Cellulose nitrate (D) Cellulose acetate butyrat

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Molecular sieves are regenerated by heating to __________ °C. (A) < 150 (B) 200-330 (C) > 500 (D) > 1000

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Last Answer : (B) 200-330

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Description : Anion exchanger is regenerated usually with (A) NaOH (B) H2SO4 (C) Hydrazine (D) Alum solution

Last Answer : (A) NaOH

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Description : Viscose rayon is chemically (A) Cellulose nitrate (B) Regenerated cellulose nitrate (C) Cellulose acetate (D) Regenerated cellulose acetate

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Celluloid is chemically (A) Cellulose acetate (B) Regenerated cellulose (C) Cellulose nitrate (D) Cellulose acetate butyrate

Description : Celluloid is chemically (A) Cellulose acetate (B) Regenerated cellulose (C) Cellulose nitrate (D) Cellulose acetate butyrate

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Description : Viscose rayon is (A) Cellulose nitrate (B) Regenerated cellulose nitrate (C) Regenerated cellulose acetate (D) None of these

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

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Description : The principal cation in intracellular fluid is (A) Sodium (B) Potassium (C) Calcium (D) Magnesium

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The principal cation in extracellular fluid is (A) Sodium (B) Potassium (C) Calcium (D) Magnesium

Description : The principal cation in extracellular fluid is (A) Sodium (B) Potassium (C) Calcium (D) Magnesium

Last Answer : Answer : A

The mineral present in the human body in larger amounts than any other cation is (A) Sodium (B) Calcium (C) Potassium (D) Iron

Description : The mineral present in the human body in larger amounts than any other cation is (A) Sodium (B) Calcium (C) Potassium (D) Iron

Last Answer : Answer : B

Which is the principal cation in the plasma of the blood? (a) Potassium (b) Magnesium (c) Calcium (d) Sodium

Description : Which is the principal cation in the plasma of the blood? (a) Potassium (b) Magnesium (c) Calcium (d) Sodium

Last Answer : d) Sodium

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Last Answer : a) Chloride Chloride is a major anion found in extracellular fluid.

Pick out the correct statement. (A) Dialysis process is used for the production of fresh water from brine (B) Electrodialysis is used in the manufacture of NaOH (C) Electrodialysis is used for the refining/purification of petrol (D) Both (B) and (C)

Description : Pick out the correct statement. (A) Dialysis process is used for the production of fresh water from brine (B) Electrodialysis is used in the manufacture of NaOH (C) Electrodialysis is used for the refining/purification of petrol (D) Both (B) and (C)

Last Answer : (B) Electrodialysis is used in the manufacture of NaOH

Zeolite is used in the (A) Water treatment (B) Glass manufacture (C) Hydrogenation of fatty oil as a catalyst (D) Development of exposed photographic plate

Description : Zeolite is used in the (A) Water treatment (B) Glass manufacture (C) Hydrogenation of fatty oil as a catalyst (D) Development of exposed photographic plate

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Description : Good quality of edible salt is obtained from brine by the process of (A) Solar evaporation (B) Vacuum evaporation (C) Freeze drying (D) Electrolysis

Last Answer : (B) Vacuum evaporation

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Description : Solvay process as compared to dual process (i.e. modified Solvay process). (A) Can use low grade brine (B) Has less corrosion problems (C) Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl (D) Both (B) and (C)

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

Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials. (A) Coke and sand (B) Brine and coal (C) Coke and caustic soda (D) None of these

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Last Answer : (B) Brine and coal

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Last Answer : (A) Naturally occuring clay which is capable of exchanging cations

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Description : Which of the following is an organometallic compound? (A) Isopropyl alcohol (B) Tetra-ethyl lead (C) Zeolite (D) Cumene

Last Answer : (B) Tetra-ethyl lead

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Description : CaSO4 .½H2O is known as (A) Blue vitriol (B) Plaster of Paris (C) Gypsum (D) Zeolite

Last Answer : (B) Plaster of Paris