Permanent hardness of water can be removed by (A) Simply boiling (B) Adding alum (C) Passing it through cation & anion exchangers (D) All (A), (B) and (C)

Permanent hardness of water can be removed by
(A) Simply boiling
(B) Adding alum
(C) Passing it through cation & anion exchangers
(D) All (A), (B) and (C)
by

1 Answer

Answer :

(C) Passing it through cation & anion exchangers
by

Related questions

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

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

Last Answer : (D) Zeolite process

Permanent hardness of water can be removed by (A) Boiling (B) Adding Ca(OH)2 (C) Boiling it with Na2CO3 (D) None of these

Description : Permanent hardness of water can be removed by (A) Boiling (B) Adding Ca(OH)2 (C) Boiling it with Na2CO3 (D) None of these

Last Answer : (C) Boiling it with Na2CO3

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

Permanent hardness of water cannot be removed by (a) Boiling (b) Adding caustic soda (c) Distillation (d) Adding soda

Description : Permanent hardness of water cannot be removed by (a) Boiling (b) Adding caustic soda (c) Distillation (d) Adding soda

Last Answer : Ans:(a)

Permanent - hardness of water may be removed by addition of – (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Description : Permanent - hardness of water may be removed by addition of – (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Last Answer : (2) Sodium carbonate Explanation: Sodium carbonate (also known as washing soda or soda ash) is a sodium salt of carbonic acid. In domestic use, it is used as a water softener in laundering. It ... with the detergent being used. Sodium carbonate can be used to remove grease, oil and wine stains.

Permanent – hardness of water may be removed by addition of (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Description : Permanent – hardness of water may be removed by addition of (1) Alum (2) Sodium carbonate (3) Lime (4) Potassium Permangante

Last Answer : Sodium carbonate

Permanent hardness of water can be removed by (A) Addition of soda ash to it (B) Treating it with zeolites (C) Passing it through sodium hexametaphosphate (D) All (A), (B), and (C)

Description : Permanent hardness of water can be removed by (A) Addition of soda ash to it (B) Treating it with zeolites (C) Passing it through sodium hexametaphosphate (D) All (A), (B), and (C)

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

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

If water smells bad, then that odour can be removed by adding – (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen

Description : If water smells bad, then that odour can be removed by adding – (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen

Last Answer : (3) activated carbon Explanation: Adding powdered activated carbon to water or using of granular activated carbon (GAC) in the water filter can remove bad taste and foul odour. Powdered activated ... the activated carbon and retained, but the material doing the adsorption does not change size.

If water smells bad, then that odour can be removed by adding - (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen

Description : If water smells bad, then that odour can be removed by adding - (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen

Last Answer : (3) activated carbon Explanation: Adding powdered activated carbon to water or using of granular activated carbon (GAC) in the water filter can remove bad taste and foulodor.

If water smells bad, then that odour can be removed by adding (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen

Description : If water smells bad, then that odour can be removed by adding (1) alum (2) bleach (3) activated carbon (4) deactivated nitrogen

Last Answer : activated carbon

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

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

Last Answer : (A) NaOH

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

Polyvinyl alcohol is used as a (A) Cation/anion exchanger (B) Water soluble adhesive (C) Textile fibre (D) Non-sticky coating on frying pans

Description : Polyvinyl alcohol is used as a (A) Cation/anion exchanger (B) Water soluble adhesive (C) Textile fibre (D) Non-sticky coating on frying pans

Last Answer : (B) Water soluble adhesive

Which of the following processes can remove both temporary as well as permanent hardness of water? (A) Filtration (B) Boiling (C) Distillation (D) None of these

Description : Which of the following processes can remove both temporary as well as permanent hardness of water? (A) Filtration (B) Boiling (C) Distillation (D) None of these

Last Answer : (C) Distillation

__________ is removed from water by lime-soda process. (A) Foul smell and taste (B) Iron and manganese (C) Temporary hardness (D) Permanent hardness

Description : __________ is removed from water by lime-soda process. (A) Foul smell and taste (B) Iron and manganese (C) Temporary hardness (D) Permanent hardness

Last Answer : (C) Temporary hardness

Permanent hardness of water can be re- moved by adding?

Description : Permanent hardness of water can be re- moved by adding?

Last Answer : sodium carbonate or by distillation or by ex- change method

By boiling water, hardness can be removed if it is due to (A) Calcium sulphate (B) Magnesium sulphate (C) Calcium nitrate (D) Calcium bicarbonate

Description : By boiling water, hardness can be removed if it is due to  (A) Calcium sulphate  (B) Magnesium sulphate  (C) Calcium nitrate  (D) Calcium bicarbonate 

Last Answer : (D) Calcium bicarbonate 

Hardness of water can be removed by boiling if it is due to (A) Calcium bicarbonates (B) Calcium sulphates (C) Calcium chloride (D) Calcium nitrates

Description : Hardness of water can be removed by boiling if it is due to  (A) Calcium bicarbonates  (B) Calcium sulphates  (C) Calcium chloride  (D) Calcium nitrates 

Last Answer : (A) Calcium bicarbonates 

How can Permanent hardness of water be removed? -Do You Know?

Description : How can Permanent hardness of water be removed? -Do You Know?

Last Answer : A few methods to remove hardness from water are,Chemical Process of Boiling Hard Water.Adding Slaked Lime (Clark's Process)Adding Washing Soda.Calgon Process.Ion Exchange Process.Using Ion Exchange Resins.

How can Permanent hardness of water be removed?

Description : How can Permanent hardness of water be removed?

Last Answer : By adding washing soda

How can Permanent hardness of water be removed?

Description : How can Permanent hardness of water be removed?

Last Answer : By adding washing soda

Permanent hardness of water may be removed by addition of?

Description : Permanent hardness of water may be removed by addition of?

Last Answer : Sodium carbonate

1. How can Permanent hardness of water be removed? 2. The Sun City is located in which continent? 3. Which situation makes a firm most efficient? 4. On the shore of which counrty cold currents have cooling effect? 5. Which pioneer was in preaching Nirguna Bhakti in medieval India?

Description : 1. How can Permanent hardness of water be removed? 2. The Sun City is located in which continent? 3. Which situation makes a firm most efficient? 4. On the shore of which counrty cold currents ... Aravalli ranges are an example of which mountains? 20. Which war was ended by the Treaty of Madras?

Last Answer : Answer : 1. By adding washing soda 2. South Africa3. Lowest average costs 4. Peru 5. Ramananda 6. Hydra 7. Dr. B. R. Ambedkar 8. Black 9. North-west Atlantic10. Gulbadan Begam 11. Bangladesh ... Rana Sanga 16. The Cabinet 17. Radio waves 18. Morarji Desai 19. Residual mountains 20. First Mysore war

What is the difference between a cation and an anion?

Description : What is the difference between a cation and an anion?

Last Answer : A cation is a positively charged ion, while an anion is a negatively charged ion.

What is the difference between a cation and an anion?

Description : What is the difference between a cation and an anion?

Last Answer : A: A cation is a positively charged ion, while an anion is a negatively charged ion.

(a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry

Description : (a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry

Last Answer : (b) Ionic compounds are soluble in water. (c) It is because aqueous solutions consist of ions which can move freely in them and carry current.

What is the difference between cation and anion? -Chemistry 9th

Description : What is the difference between cation and anion? -Chemistry 9th

Last Answer : Cations and anions introduction: Ions which are a part of the science subject Chemistry forms from atoms and electrons that have either gained or lost their weight by the removal or adding of one or more ... of electrons is more than the number of protons in an anion. thank you hope this helps u

A cation and an anion slowly move towards each other. What happens to the strength of the electrostatic force between them?

Description : A cation and an anion slowly move towards each other. What happens to the strength of the electrostatic force between them?

Last Answer : The Strength is increased and and Ionic bond is formed.An Ionic bonds involve a cation and an anion. The bond is formed when an atom, typically a metal, loses an electron or electrons, and ... it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

Is gallium a cation or anion?

Description : Is gallium a cation or anion?

Last Answer : Gallium is a metallic element. It forms cations Ga3+ and Ga+

Is boron a cation or a anion?

Description : Is boron a cation or a anion?

Last Answer : Boron is an element and is neither an anion or cation. Ifionized it would tend to from B3+ and would be thus a cation.

What is beryllium cation or anion?

Description : What is beryllium cation or anion?

Last Answer : Beryllium cation is Be(2+).

Is calcium an cation or anion?

Description : Is calcium an cation or anion?

Last Answer : Calcium has the cation Ca(2+).

Is calcium an cation or anion?

Description : Is calcium an cation or anion?

Last Answer : Calcium has the cation Ca(2+).

What is beryllium cation or anion?

Description : What is beryllium cation or anion?

Last Answer : Beryllium cation is Be(2+).

At a pH below the isoelectric point, an amino acid exists as (A) Cation (B) Anion (C) Zwitterion (D) Undissociated molecule

Description : At a pH below the isoelectric point, an amino acid exists as (A) Cation (B) Anion (C) Zwitterion (D) Undissociated molecule

Last Answer : Answer : A

At isoelectric pH, an amino acid exists as (A) Anion (B) Cation (C) Zwitterion (D) None of these

Description : At isoelectric pH, an amino acid exists as (A) Anion (B) Cation (C) Zwitterion (D) None of these

Last Answer : Answer : C

The element absorbed both in cation and anion form is – (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus

Description : The element absorbed both in cation and anion form is – (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus

Last Answer : (2) Nitrogen Explanation: Nitrogen, required in large quantities for healthy plant growth, is supplied either as a cation (ammonium) or an anion (nitrate). The ratio of these two forms of nitrogen in the nutrient solution can have large effects on both the rate and direction of pH changes with time.

Which of the following is aromatic? (a) cyclopentadienyl cation (b) 1,3-cyclohexadiene(c) cyclobutenyl anion (d) cycloheptatrienyl cation

Description : Which of the following is aromatic? (a) cyclopentadienyl cation (b) 1,3-cyclohexadiene (c) cyclobutenyl anion (d) cycloheptatrienyl cation

Last Answer : cycloheptatrienyl cation

In the addition of hydrogen bromide to alkynes, which of the following species is believed to be an intermediate? (a) vinyl anion (b) vinyl cation (c) vinyl radical (d) carbene

Description : In the addition of hydrogen bromide to alkynes, which of the following species is believed to be an intermediate? (a) vinyl anion (b) vinyl cation (c) vinyl radical (d) carbene

Last Answer : vinyl cation

Which of the following electrolytes is a major anion in body fluid? a) Chloride Chloride is a major anion found in extracellular fluid. b) Potassium Potassium is a cation. c) Sodium Sodium is a cation. d) Calcium Calcium is a cation.

Description : Which of the following electrolytes is a major anion in body fluid? a) Chloride Chloride is a major anion found in extracellular fluid. b) Potassium Potassium is a cation. c) Sodium Sodium is a cation. d) Calcium Calcium is a cation.

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

Which of the following electrolytes is a major cation in body fluid? a) Potassium Potassium is a major cation that affects cardiac muscle functioning. b) Chloride Chloride is an anion. c) Bicarbonate Bicarbonate is an anion. d) Phosphate Phosphate is an anion.

Description : Which of the following electrolytes is a major cation in body fluid? a) Potassium Potassium is a major cation that affects cardiac muscle functioning. b) Chloride Chloride is an anion. c) Bicarbonate Bicarbonate is an anion. d) Phosphate Phosphate is an anion.

Last Answer : a) Potassium Potassium is a major cation that affects cardiac muscle functioning.

In solid-state optical detectors, the excited charge is transported in the solid by ∙ a. Holes and protons ∙ b. Holes and electrons ∙ c. Anion and cation ∙ d. Protons and photons

Description : In solid-state optical detectors, the excited charge is transported in the solid by ∙ a. Holes and protons ∙ b. Holes and electrons ∙ c. Anion and cation ∙ d. Protons and photons

Last Answer : ∙ b. Holes and electrons

While conducting Luminol test, luminol reacts with hydrogen salt and forms: (a) Di-anion (b) Cation (c) Anion (d) All of the above

Description : While conducting Luminol test, luminol reacts with hydrogen salt and forms: (a) Di-anion (b) Cation (c) Anion (d) All of the above

Last Answer : Ans: (a). Di-anion

The element absorbed both in cation and anion form is (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus

Description : The element absorbed both in cation and anion form is (1) Sulphur (2) Nitrogen (3) Calcium (4) Phosphorus 

Last Answer : Nitrogen

Pick out the wrong statement. (A) Economy of a multiple effect evaporator is not influenced by the boiling point elevation (B) Two identical cubes of iron and copper will have the same heat content under the same conditions of temperature (C) Double pipe heat exchangers are mostly used in the field of refrigeration (D) Finned tube heat exchangers are suitable for heating air by steam

Description : Pick out the wrong statement. (A) Economy of a multiple effect evaporator is not influenced by the boiling point elevation (B) Two identical cubes of iron and copper will have the same heat ... in the field of refrigeration (D) Finned tube heat exchangers are suitable for heating air by steam

Last Answer : (B) Two identical cubes of iron and copper will have the same heat content under the same conditions of temperature

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

Foul odour and bad taste of water is removed by treating with (A) Alum (B) Bleaching powder (C) Activated carbon (D) Copper sulphate

Description : Foul odour and bad taste of water is removed by treating with (A) Alum (B) Bleaching powder (C) Activated carbon (D) Copper sulphate

Last Answer : (C) Activated carbon

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