What are the benefits of reverse osmosis systems in purifying water?

1 Answer

Answer :

Reverse osmosis is a membrane technical filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane.

Related questions

Description : I currently haul reverse-osmosis filtered water from the grocery store to my house in 1-gallon glass jugs. Is there a better way?

Last Answer : Have a system installed in your house. You will find it cleaner and purer then the stuff you are getting at the store. It does not come cheep. But, how important is your health?

Description : How much does a reverse osmosis water system cost?

Last Answer : You can buy a cheap reverse osmosis water system at most large multi purpose chain retail stores, for example Costco, where an average price for a reverse osmosis system is around 160 dollars.

Description : The process used in the desalination of sea water is (a) osmosis (b) reverse osmosis (c) electrophoresis (d) distillation

Last Answer : Ans:(b)

Description : Which of the following is the treatment of water pollution? (1) Bag house filter (2) Windrow composting (3) Venturi scrubber (4) Reverse Osmosis

Last Answer : (4) Reverse Osmosis Explanation: Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. It can ... of potable water. It is most commonly known for its use in drinking water purification form.

Description : __________ is the separation technique used for desalination of sea water. (A) Thermal diffusion (B) Reverse osmosis (C) Adsorption (D) Absorption

Last Answer : (B) Reverse osmosis

Description : Brackish water which contains mostly dissolved salt, can be purified by the __________ process. (A) Reverse osmosis (B) Sand filter (C) Lime soda (D) Permutit

Last Answer : (A) Reverse osmosis

Description : Reverse osmosis is normally used for the (A) Separation of isotopes of uranium from gaseous uranium hexafluoride (B) Separation of helium from natural gas (C) Desalination of brackish water to produce potable (drinking) water (D) Purification of oxygen

Last Answer : (C) Desalination of brackish water to produce potable (drinking) water

Description : Separation of fresh water from sea water can be done by the __________ operation. (A) Osmosis (B) Reverse osmosis (C) Absorption (D) Adsorption

Last Answer : (B) Reverse osmosis

Description : Which of the following is the treatment of water pollution? (1) Bag house filter (2) Windrow composting (3) Venturi scrubber (4) Reverse Osmosis

Last Answer :  Reverse Osmosis

Description : We have a Reverse Osmosis and every few years we have to replace the bladder in the tank...(rest in details)

Last Answer : If there is chlorine in your water, that could do it. You may want to change your pre-filter in your RO to something with activated carbon. You may also want to have your RO tested to make sure it is still working correctly.

Description : The working principle of a washing machine is? A. Diffusion B. Reverse osmosis C. Dialysis D. Centrifugation

Last Answer : ANSWER: D

Description : The washing machine works on the principle of – (1) Dialysis (2) Diffusion (3) Reverse osmosis (4) Centrifugation

Last Answer : (4) Centrifugation Explanation: Washing machines work on the principle of centrifugation. They are based on medium sized centrifuges that put an object in rotation around a fixed axis, applying force perpendicular to the axis.

Description : The working principle of a washing machine is : (1) centrifugation (2) dialysis (3) reverse osmosis (4) diffusion

Last Answer : (1) centrifugation Explanation: The working of the washing machine is quite high tech, and includes a set sequence of washing, rinsing, and spinning (plus a pre-wash if desired).

Description : The washing machine works on the principle of - (1) Dialysis (2) Diffusion (3) Reverse osmosis (4) Centrifugation

Last Answer : (4) Centrifugation Explanation: Washing machines work on the principle of centrifugation. They are based on medium sized centrifuges that put an object in rotation around a fixed axis, applying force perpendicular to the axis.

Description : The working principle of a 'Washing machine' is : (1) centrifugation (2) dialysis (3) reverse osmosis (4) diffusion

Last Answer : (1) centrifugation Explanation: The principle behind the spinning dry of the clothes in a washing machine is centrifugal force. The fast spinning around of the clothes in the drum creates a large ... wet clothes are flung outwards to the drum edge and the water escapes through the drum holes.

Description : Separation of the isotopes of helium for scientific investigations is done by (A) Reverse osmosis (B) Thermal diffusion (C) Leaching (D) Solvent extraction

Last Answer : (B) Thermal diffusion

Description : The process employing desorption of the absorbed solute by a solvent is called (A) Elution (B) Osmosis (C) Reverse osmosis (D) Sublimation

Last Answer : (A) Elution

Description : Reverse osmosis is also called (A) Dialysis (B) Electrodialysis (C) Diffusion (D) Ultra-filtration

Last Answer : (D) Ultra-filtration

Description : Mention a large scale use of the phenomenon called reverse osmosis

Last Answer : Ans:- In desalination of sea water. 

Description : The washing machine works on the principle of (1) Dialysis (2) Diffusion (3) Reverse osmosis (4) Centrifugation

Last Answer : Centrifugation

Description : Differentiate between reverse osmosis membrane process with ultra filtration membrane

Last Answer : The main difference between reverse osmosis and ultrafiltration is that ultrafiltration membranes have larger pore sizes than reverse osmosis membranes, ranging from 1 to 100 nm. Ultrafiltration membranes are ... uses a hollow fiber membrane to stop solid debris and microscopic contaminants.

Description : Principle of reverse osmosis process

Last Answer : When two solutions of unequal concentrations are separated by a semi permeable membrane and if a hydrostatic pressure in excess of osmotic pressure is applied on the concentrate side, the solvent is forced to move ... ranges of these membranes are pH of 2 to 12 and temperatures of 0°C to 40°C.

Last Answer : The process of purifying water with a sieve is called sieving.

Description : Potassium Permanganate is used for purifying drinking water, because ________. (1) It is a reducing agent (2) It is an oxidising agent (3) It is a sterilising agent (4) It dissolves the impurities of water

Last Answer : (2) It is an oxidising agent Explanation: Potassium permanganate is a point-of-entry water treatment method that oxidizes dissolved iron, mancianese, and hydrogen sulfide into solid particles that are filtered ... to control iron bacteria growth in wells. It is an oxidant, but a poor disinfectant.

Description : Potassium Permanganate is used for purifying drinking water, because - (1) it dissolves the impurities of water (2) It is a sterilizing agent (3) It is an oxidising agent (4) It is a reducing agent

Last Answer : (3) It is an oxidising agent Explanation: Potassium permanganate is a point-of-entry treatment method that oxidizes dissolved iron, manganese, and hydrogen sulfide into solid particles that are filtered out of the water.

Description : Potassium Permanganate is used for purifying drinking water, because_________ (1) It is a reducing agent (2) It is an oxidising agent (3) It is a sterilising agent (4) It dissolves the impurities of water 

Last Answer :  It is an oxidising agent

Description : What is the method for purifying iron?

Last Answer : Feel Free to Answer

Description : Are there room air filters especially for purifying cigarette smoke?

Last Answer : AllerAir is an air filter that is known for purifying a room of oder and chemicals. This electronic device filters the odor particles out of the smoke and produce fresh air.

Description : Do you have to buy filters for the purifier and if so are they reusable How big of an area or room size does it cover for purifying the air?

Last Answer : Yes there are filters for this product. They are not reuseable. The purifier can cover an area of up to 2000 sq. ft.

Description : The process of purifying Sulphide ores?

Last Answer : Froth Flotation process

Description : What is the common criteria for purifying organic compound ?

Last Answer : Their Fixed Melting and Boiling point.

Description : Cast iron (A) Is obtained by purifying pig iron (B) Is manufactured in required shapes (C) May contain 2 to 5 per cent of carbon with other impurities (D) All the above

Last Answer : Answer: Option D

Description : The science of the study of feedback systems in humans, animals and machines is known as: (A) cybernetics (B) reverse communication (C) selectivity study (D) response analysis

Last Answer : Answer: A  Cybernetics is the study of communication and control processes in living organisms and machines. Cybernetics analyzes the ability of humans, animals, and some machines to respond to ... machines control their actions by telling them whether they are proceeding in the right direction. 

Description : During Osmosis, movement of water takes place from

Last Answer : Ans. Lower to higher concentration of solution

Description : The hydrostatic pressure generated within the cell against cell wall as a result of entry of water into it, due to osmosis.

Last Answer : Ans. Turgor pressure

Description : In plants water is absorbed by the root hairs by a process called: (1) Transpiration (2) Respiration (3) Perspiration (4) Osmosis

Last Answer : (4) Osmosis Explanation: Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant. (through the network of xylem vessels) through a combination of capillary action and "transiprational pull".

Description : Excess amount of absorbed water by plants is liberated out by – (1) Evaporation (2) Osmosis (3) Diffusion (4) Transpiration

Last Answer : (4) Transpiration Explanation: Water vapour transpires constantly through pores (stomata) in the surface of plant's leaves.

Description : When water enters in roots due to diffusion, is termed as (a) osmosis (b) passive absorption (c) endocytosis (d) active absorption.

Last Answer : (b) passive absorption

Description : A bottle filled with previously moistened mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon involved is (a) diffusion (b) imbibition (c) osmosis (d) DPD.

Last Answer : b) imbibition

Description : Which of the following categories of laxatives draw water into the intestines by osmosis? a) Saline agents (milk of magnesia) Saline agents use osmosis to stimulate peristalsis and act within 2 ... by surfactant action on the colonic epithelium, resulting in mixing of aqueous and fatty substances.

Last Answer : a) Saline agents (milk of magnesia) Saline agents use osmosis to stimulate peristalsis and act within 2 hours of consumption.

Description : Oncotic pressure refers to a) the osmotic pressure exerted by proteins. Oncotic pressure is a pulling pressure exerted by proteins, such as albumin. b) the number of dissolved particles contained in a ... . Osmotic pressure is the amount of pressure needed to stop the flow of water by osmosis.

Last Answer : a) the osmotic pressure exerted by proteins. Oncotic pressure is a pulling pressure exerted by proteins, such as albumin.

Description : The process of osmosis is best illustrated by the movement of: a) salts in blood stream. b) oxygen into red blood cells. c) carbon dioxide through stomata. d) water into root hair cells.

Last Answer : ANSWER: D -- WATER INTO ROOT HAIR CELLS.

Description : Water molecules enter plant epidermal cells by: a) osmosis b) active transport c) translocation d) transpiration

Last Answer : ANSWER: A -- OSMOSIS

Description : In plant-water relationships, symbol ‘YW’ is used to represent (1) Osmotic pressure (2) Water potential (3) Solute potential (4) Osmosis

Last Answer : Water potential

Description : Excess amount of absorbed water by plants is liberated out by : (1) Evaporation (2) Osmosis (3) Diffusion (4) Transpiration

Last Answer : Transpiration

Description : In plants water is absorbed by the root hairs by a process called: (1) Transpiration (2) Respiration (3) Perspiration (4) Osmosis

Last Answer : Osmosis

Description : What is the difference between osmosis and diffusion?

Last Answer : A: Osmosis is the movement of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration, while diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Description : What is the difference between diffusion and osmosis?

Last Answer : A: Diffusion is the movement of particles from an area of high concentration to an area of low concentration, while osmosis is the movement of water molecules from an area of low solute concentration to an area of high solute concentration.

Description : What is the difference between diffusion and osmosis?

Last Answer : A: Diffusion is the movement of particles from an area of high concentration to an area of low concentration, while osmosis is the movement of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Description : What is the difference between osmosis and diffusion?

Last Answer : A: Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, while osmosis is the diffusion of water molecules across a selectively permeable membrane.