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 : 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 : 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 : The process used in the desalination of sea water is (a) osmosis (b) reverse osmosis (c) electrophoresis (d) distillation
Last Answer : Ans:(b)
Description : Deaeration (removal of O2 ) of water is done by (A) Rectification (B) Absorption (C) Ion-exchange (D) Adsorption
Last Answer : (C) Ion-exchange
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 : Pick out the correct statement. (A) Higher hold up of the solid in the rotary dryer results in better exposure of the solids to the gas (B) The 'Hatta number' is ... reflux in case of distillation operation requires infinite number of plates for a binary system separation
Last Answer : (C) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion
Description : Hypersorption refers to a __________ process. (A) Fixed bed absorption (B) Moving bed absorption (C) Fixed bed adsorption (D) Moving bed adsorption
Last Answer : (D) Moving bed adsorption
Description : Removal of __________ exemplifies an adsorption unit operation. (A) Uranium from its ore (B) Water from petrol (C) Ammonia from coke oven gas (D) Mustard oil from mustard seed
Last Answer : (B) Water from petro
Description : Adsorption is a unit operation which generally involves __________ systems. (A) Liquid-solid (B) Gas-solid (C) Fluid-solid (D) Solid-solid
Last Answer : (C) Fluid-solid
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 : Ion exchange process is similar to (A) Absorption (B) Adsorption (C) Extraction (D) Leaching
Last Answer : (B) Adsorption
Description : For which of the following unit operations, Lewis number is ofsignificance? (A) Adsorption (B) Binary distillation (C) Gas absorption (D) Humidification
Last Answer : (D) Humidification
Description : Langmuir equation is associated with (A) Leaching (B) Adsorption (C) Steam distillation (D) Multi-component absorption
Description : Coke oven gas is stripped of its H2S and mercaptans content by (A) Absorption in wash oil (B) Adsorption on bog iron bed (C) Bubbling it through dilute sulphuric acid (D) Adsorption on silica gel
Last Answer : (B) Adsorption on bog iron bed
Description : Hydrogen is recovered from coke oven gas on commercial scale (as practised in fertiliser plant at Rourkela) by (A) Adsorption on palladium (B) Cryogenic operations (low temperature cooling) (C) Absorption (using ethanolamine or pyrogallol solution) (D) None of these
Last Answer : (B) Cryogenic operations (low temperature cooling)
Description : The rate expression for a heterogeneous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + KR.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR ... R and A) (A) E (B) E + ΔHA (C) E + ΔHA - ΔHR ) (D) ΔHA + ΔHR
Last Answer : (C) E + ΔHA - ΔHR )
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 : What are the benefits of reverse osmosis systems in purifying water?
Last 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.
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 : 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.
Last Answer : Reverse Osmosis
Description : Muddy water is treated with alum in purification process, it is termed as : (1) emulsification (2) absorption (3) adsorption (4) coagulation
Last Answer : (4) coagulation Explanation: Natural and wastewater contain small particulates that are suspended in water forming a colloid. These particles carry the same charges, and repulsion prevents them from combining into larger particulates to settle.
Description : Muddy water is treated with alum in purification process, itis termed as : (1) emulsification (2)absorption (3) adsorption (4) coagulation
Last Answer : coagulation
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 : 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
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 : 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.
Description : Adsorption and absorption. Give one example.
Last Answer : Distinguish between the following : Adsorption and absorption. Give one example.
Description : Absorption and adsorption:
Last Answer : Adsorption : the adhesion of a thin layer of molecules of some substance to the surface of a solid or liquid. Absorption: the ability of a substance to absorb light, noise, or energy, or the fact that it does so
Description : The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication
Last Answer : adsorption
Description : What Is The Difference Between Absorption & Adsorption And Sorption?
Last Answer : Answer : Absorption generally refers to two phenomena, which are largely unrelated. In one case, it refers to when atoms, molecules, or ions enter some bulk phase - gas, liquid or solid material ... different from absorption, in which a substance diffuses into a liquid or solid to form a solution.
Description : How Can You Distinguish Between Sorption, Absorption And Adsorption?
Last Answer : Answer : Sorption is a concomitant phenomenon of adsorption and absorption. Adsorption describes the phenomenon in which molecules that are present in a fluid (liquid or gas), concentrated spontaneously on a solid surface by a finite time.
Description : The formation of pockets of gas in a liquid is called: w) absorption x) cavitation y) adsorption z) dissolving
Last Answer : ANSWER: X -- CAVITATION
Description : Maximum use of petroleum coke is in (A) Adsorption refining operation (B) Fuel gas manufacture (C) Carbon electrode manufacture (D) Iron ore reduction
Last Answer : (C) Carbon electrode manufacture
Description : In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is (a) diffusion (b) absorption (c) osmosis (d) electrophoresis
Last Answer : Ans:(c)
Description : In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is (1) Diffusion (2) Absorption (3) Osmosis (4) Electrophoresis
Last Answer : (3) Osmosis Explanation: Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultrafiltration) from the blood. This process is naturally done by our kidneys. It ... it results in osmotic pressure which causes the fluid to move from the blood into the dialysate.
Description : Dough kept overnight in warm weather becomes soft and spongy because of (a) absorption of carbon dioxide from atmosphere (b) fermentation (c) cohesion (d) osmosis.
Last Answer : (b) fermentation
Description : In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is (1) Diffusion(2) Absorption (3) Osmosis (4) Electrophoresis
Last Answer : Osmosis
Description : Steady state equimolal counter diffusion is encountered in (A) Separation of a binary mixture by distillation (B) Absorption of NH3 from air by water (C) All liquid-liquid diffusion systems (D) All liquid-solid diffusion systems
Last Answer : (A) Separation of a binary mixture by distillation
Description : What are the methods of treatment & disposal of radioactive wastes? (A) Evaporation & chemical precipitation (B) Biological methods & adsorption in ion exchange materials (C) Fixing into a solid mass with cement and sinking deep in the sea (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Separation of two or more components of a liquid solution cannot beachieved by (A) Fractional crystallisation (B) Liquid extraction (C) Absorption (D) Evaporation
Last Answer : (C) Absorption