calgon converts the scale forming impurity like caso4 into

If the precipitation takes place in the form of loose and slimy precipitate, it is called sludge. Explanation: Calgon converts the scale forming impurity like CaSO4 into soluble complex compound which are harmless to boiler. 4. On the other hand, if the precipitated matter forms a hard, adhering crust/coating on the inner walls of the boiler, it is called scale. Probably, its most important use as an engineering material is in the, .Water is also used a coolant in power and chemical plants. They are used in low pressure boilers. In high pressure boilers, CaSO4 scale whose solubility decrease with increase of temperature. What is used for calgon conditioning? All these Ca, salts (weather they are formed due to the reaction of Mg salts, or they are present in as. Do not sell or share my personal information. At room temperature, the impure compound in crystallisation is ____________, Calgon converts the scale forming impurity like CaSO4 into ___________, Electron cryomicroscopy is used mainly for _______________, Dilution means an increase in the amount of ____________, Semipermeable membrane allows ____________. Tech I semester ENGINEERING CHEMISTRY (Common for all Branches, Pakistan Steel Boiler operation & Water treatment.pdf, Engineering Chemistry Notes For vtu students (Common to all Branches) (Effective from the academic year 2010-11) Subject Code: (10CHE12/22, ENGINEERING CHEMISTRY FIRST SEMESTER UNIT I Molecular Mass, Equivalent Mass, Acids and Bases and Chemical Bonding UNIT-II SOLUTION, TECHNOLOGY OF WATER AND SOLID STATE 1.1 MOLECULAR MASS 4 Hrs 2.1 SOLUTION 4 Hrs 2.2 TECHNOLOGY OF WATER 7 Hrs, [usebooks.blogspot.com] chemistry by jain and jain, ENGINEERING CHEMISTRY UNIT -I WATER AND ITS TREATMENT PART A 1. Explanation: Calgon converts the scale forming impurity like CaSO4 into soluble complex compound which are harmless to boiler. Two major types of boiler water treatment are: External water treatment and internal water treatment. Internal Treatment (Internal Conditioning) of Boiler Water. Water: Introduction, Hardness: Causes, expression of hardness - units - types of hardness. Water Treatment Technology - SlideShare CAUSTIC EMBRITTLEMENT Caustic embrittlement is a form of corrosion caused by a high concentration of sodium Hydroxide in the boiler feed water. On which of the following factors diffusion does not depend? The hot water or steam under pressure is then usable for transferring the heat to a process. Composition Na2(Na4 (PO3)6). Softening of water, Analytical Methods and Fuels, Engineering Chemistry What is the difference between air conditioning and refrigeration? . Calgon conditioning: It is the process of addition of calgon or sodium hexametaphosphate to boiler feed water. Tri-sodium phosphate Na3PO4 (too alkaline): used for too acidic water. The chemicals added for this purpose are called Boiler compounds. The reaction is as follows: 2CaSO4 + Na 2 [Na 4 (PO3) 6] Na 2 [Ca 2 (PO3) 6] + 2Na2SO4. estimation of temporary & permanent hardness of water. Calgon converts the scale forming impurity like CaSO4 into What is used for calgon conditioning? Treatment for water softening. Originally promoted for general use in bathing and cleaning, it gave rise to derivative products which have diverged from the original composition. Under-specification of boundary conditions gives rise to _____________, Chemistry Solid State Close Packed Structures, Chemistry Solid State Crystal Lattices Unit Cells, Chemistry Solid State Electrical Properties, Chemistry Solid State Magnetic Properties, Chemistry Stability Coordination Compounds, Chemistry States Matter Behavior Real Gases Deviation Ideal Gas Behavior, Chemistry States Matter Ideal Gas Equation, Chemistry States Matter Intermolecular Forces, Privacy Policy | Terms of Use | Contact Us | 2017 Copyright Amon.In | 0.3406970500946. iv, v). Na2[Na4(PO3)6]. Water does not give lather with soap, but produces a white scum or precipitate with soap. Most often asked questions related to bitcoin. fields such as production of steel, rayon, paper, textiles, chemicals, and for air-conditioning, drinking. When water is boiled into steam its volume increases about 1,600 times, producing a force that is almost as explosive as gunpowder. a) Calgon treatment: Calgon is sodium meta hexa phoaphate, which can be used to covert CaSO4 into soluble complex. 3. What is calgon conditioning in Engineering Chemistry? It is also known as non carbonate or non alkaline hardness. Calgon conditioning: Calgon = sodium hexa meta phosphate The process involves the addition of calgon to boiler . Caustic embrittlement is the phenomenon in which the material of a boiler becomes brittle due to the accumulation of caustic substances. Soda removes the permanent hardness caused due to Ca. The most important use of water as an engineering material is in the steam generation. Different methods of softening are discussed below: This process is now obsolete but was very useful for the, treatment of large volumes of hard water. 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Unit 4-Water Treatment | PDF | Osmosis | Ion Exchange - Scribd To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. The salts responsible for permanent hardness are CaCl, .Permanent hardness cannot be removed by boiling. Scale forming salts like CaSO4 is converted into CaCO3, . This substance reacts with calcium ions and forms highly soluble complex and thus prevents the precipitation of scale forming salt. Hardness of water is due to the presence of soluble salts of Calcium, Magnesium and other heavier metals. and subsequently becomes heavy and sattle down at the bottom. Calgon prevents limescale build-up in washing machines all over the world to protect the heating element, pipes and drum of the machines. areas of Engineering Chemistry for Quizzes, ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. 9. The chemical reaction taking place during the cold lime-soda treatment are, very slow and the precipitate which is formed this process is very fine, and is remain in, the solution even after filtration. They are. Water is a useful and cheap medium for transferring heat to a process. It ultimately receives all of the pre-boiler contaminants. 2. Caustic embrittlement is a form of corrosion caused by a high concentration of sodium Hydroxide in the boiler feed water. Scale formation due to CaSO4 in low pressure boilers can be avoided by adding Na2CO3 to the boilers. 1. Calgon converts the scale forming impurity likeCaSO4intosoluble complex compound which are harmlesstoboiler. Click to reveal The sum of temporary and permanent hardness is, The concentration of hardness as well as non-hardness constituting ions are, usually, expressed in terms. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . Engineering Chemistry Quiz focuses on Calgon Conditioning. The original product consisted of powdered sodium hexametaphosphate (amorphous sodium polyphosphate), which in water would complex with ambient calcium ion and certain other cations, preventing formation of unwanted salts and interference by those cations with the actions of soap or other detergents. Producing quality steam on demand depends on properly managed water treatment to control steam purity, deposits and corrosion. What is the substance, present in a larger quantity that. Semipermeable membrane allows ____________. In addition to it .water is widely used in other. To learn more, view ourPrivacy Policy. Calgon is added to boiler water to prevent sludge and scale formation. The colloidal substance convert scale forming substances like CaCO 3, CaSO4 into a sludge which can be removed by blow-down operation . 10. and form insoluble precipitates of Ca or Mg salts of fatty acids. Calgon converts the scale forming impurity like CaSO4 into ___________ Electron cryomicroscopy is used mainly for _______________ Dilution means an increase in the amount of ____________ Absorbers have a lean end of Semipermeable membrane allows ____________ When some chemical is mixed with water, _________ is formed. This problem can be solved by adding coagulants like, to the water. Academia.edu no longer supports Internet Explorer. Engineering Chemistry Questions and Answers Calgon Conditioning. Enter the email address you signed up with and we'll email you a reset link. 0% found this document useful, Mark this document as useful, 0% found this document not useful, Mark this document as not useful, : Water is rated to be of greatest importance among the many, essential elements for the existence of human beings, animals and plants. mass of Ca, is combined with sedimentation with coagulation, lesser amounts, increases the pH value of the treated-water; thereby corrosion of the, For efficient and economical softening, careful operation and skilled supervision. The significant role played by bitcoin for businesses! When some chemical is mixed with water, _________ is formed. There are three types of phosphates employed for this purpose. With calcium ions it forms a soluble complex and prevents scale and sludge formation. The colloidal conditioning agents are kerosene, agar-agar, gelatin, glue, etc. Calgon prevents limescale build-up in washing machines all over the world to protect the heating element, pipes and drum of the machines. Temporary hardness is caused by the presence of dissolved bicarbonates of. Do not sell or share my personal information. Required fields are marked *. Clarification: Calgon converts the scale forming impurity like CaSO4 into soluble complex compound which are harmless to boiler. What was the original product of Calgon soap? Download link for IT 2ndSEM CY6251 Engineering Chemistry 2 Lecture Notes are listed down for students to make perfect utilization and score maximum marks with our study materials. This causes the boiler to be extremely dangerous equipment that must be treated with utmost care. Explanation: The quantity of calgon to be added to prevent scale and sludge formation is 0.5-5 ppm. Calgon converts the scale forming impurity like CaSO4 into ___________ Electron cryomicroscopy is used mainly for _______________ What is the substance, present in a larger quantity that.. Absorbers have a lean end of Semipermeable membrane allows ____________ When some chemical is mixed with water, _________ is formed. It is formed by the reaction of sodium ortho-phosphate with calcium salts. Iron oxide and copper depositions can be prevented by adding ___________ to the boiler water.a) Calgonb) Carbonatec) EDTAd) EBTAnswer: cClarification: Iron oxide and copper depositions can be prevented by adding EDTA to the boiler water. The propulsion of water into . This prevents damage to heating element, pipes & drums of washing machine. Priming may be caused by improper construction of boiler, excessive ratings, or sudden fluctuations in steam demand. Calgon converts the scale forming impurity like CaSO$_{4}$ into When some chemical is mixed with water, _________ is formed. equation x and xi) and removed by filtration. Boiler performance, efficiency, and service life are direct products of selecting and controlling feed water used in the boiler. In chemistry, a colloidal conditioning is a mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance. In calgon Conditioning, the added calgon forms soluble complex compound with CaSo4, thereby it prevents the scale and sludge formation in water. Engineering Chemistry Quiz Online Exam Quiz | Engineering Chemistry The scum or precipitate is due to the formation of insoluble soaps of calcium and magnesium ions with, Hardness of water can be classified into two types. A highly soluble complex containing Ca is formed by replacing the sodium ions and thus prevents their formation of scale forming salts like CaSO4. What is calgon conditioning why it is used? - AnswersAll Internal Treatment: 4) Calgon Conditioning : It involves the addition of calgon or sodium hexametaphosphate to boiler water. At room temperature, the impure compound in crystallisation is ____________, Electron cryomicroscopy is used mainly for _______________. softening. Engineering Chemistry Objective Questions, 250+ TOP MCQs on Hydrogen Water and Answers, 250+ TOP MCQs on Inorganic Chemical Sodium Phosphate and Answers, 250+ TOP MCQs on Systems and Essentials of Air Conditioning System and Answers, 300+ TOP MCQs on D and F Block Elements and Answers. The water which produces lather with soap. Therefore, if we use hard water in turbines and heat exchangers, their pipes will be, Hard water when used for drinking for long period can lead to stomach, Removal of hardness from water is called water. Permanent hardness is due to presence of dissolved chlorides and sulphates of, Calcium, Magnesium and other heavy metals. This method is used to convert scale to sludge which can be removed by blow-down operation. It can be easily removed by boiling. Engineering Chemistry MCQ's - Calgon Conditioning Calgon prevents limescale build-up in washing machines all over the world to protect the heating element, pipes and drum of the machines. Calgon prevents limescale build-up in washing machines all over the world to protect the heating element, pipes and drum of the machines. Chemically, Calgon is sodium hexa meta phosphate (NaPO3)6 or Na2[ Na4( PO3)6] Calgon converts the scale forming impurity like CaSO4 into soluble complex compound and thus can easily be removed . PDF B.Tech 1st year By - University of Lucknow Unit-4 Water Technology | PDF | Ion Exchange | Zeolite - Scribd The reactions involved in this process are as follows: It is evident from the above equations that when permanent hardness producing, magnesium salts reacted with lime, produces Mg(OH), as a by product(refer eq. Addition of calgon to boiler water to prevent sludge & limescale formation is called calgon conditioning. 12 Application Note Steam generation in power plants, STEAM GENERATION IN POWER PLANTS Application description, In the name of Allah, the most merciful and beneficent. since this mode permits the multiplication and division of concentration. The water which does not produce lather with soap. Q: Calgon converts the scale forming impurity like CaSO4 into this soluble complex does not cause any problem in boilers. For CY6251 CHEM 2 Previous Year Question Papers Click here This can be removed by boiling. 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The colloidal substances convert scale forming substance like CaCO3, CaSO4 into a Non-adherent, loose precipitate called sludge, which can be removed by blow-down Operation. Water is not only essential for the lives of animals and plants, but also occupies a unique position, in industries. Di-sodium hydrogen phosphate Na2HPO4 (weakly alkaline): Used for weakly acidic water. : It is due to the presence of bicarbonates of calcium and, magnesium salts. Impurities in Water 1) Dissolved Impurities :- carbonates and bicarbonates, chlorides, magnesium, iron, dissolved gases 2) Suspended Impurities :- Organic :- oil globules, vegetable and animal matter Inorganic :- clay and sand 3) Colloidal Impurities :- finely divided silica and clay, organic waste products, amino acids 4) Micro organisms :- fun. Explanation: Calgon converts the scale forming impurity like CaSO4 into soluble complex compound which are harmless to boiler. This is called foaming and it is caused by high concentration of any solids in the boiler water. What is calgon conditioning How is it better than phosphate conditioning? Home Chemical Engineering Basics - Part 1 Engineering Chemistry Quiz Question: Calgon converts the scale forming impurity like CaSO4 into ___________ Options A : Soluble complex compound B : Insoluble complex compound C : Soluble acids D : Insoluble acids Click to view Correct Answer Previous || Next Engineering Chemistry Quiz more questions The quantity of calgon to be added to prevent scale and sludge formation is ___________ a) 10-20 ppm b) 30-50 ppm c) 0.005-0.1 ppm d) 0.5-5 ppm Answer: d What is calgon conditioning why it is used? - Sage-Advices ), water is, rated to be of the greatest importance. The colloidal substances convert scale forming substance like CaCO3, CaSO4 into a Non-adherent, loose precipitate called sludge, which can be removed by blow-down Operation. Explanation: The quantity of calgon to be added to prevent scale and sludge formation is 0.5-5 ppm. The calcium ions (responsible for scale / sludge formation) are complexed by calgon to form a soluble complex and hence prevented from their scale forming action. Calgon is a brand registered trademark of water softener, and bath and beauty products. Calgon converts the scale forming impurity like CaSO4 into ___________a) Soluble complex compoundb) Insoluble complex compoundc) Soluble acidsd) Insoluble acidsAnswer: aClarification: Calgon converts the scale forming impurity like CaSO4 into soluble complex compound which are harmless to boiler. Engineering Chemistry Quiz - Sanfoundry By using our site, you agree to our collection of information through the use of cookies. If you continue to use this site we will assume that you are happy with it. A boiler is an enclosed vessel that provides a means for combustion heat to be transferred into water until it becomes heated water or steam. 5. Which of the following is/are the types of liquid-metal corrosion? Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. (PPT) Unit - I Water Technology | Mr.Eobard Thawne - Academia.edu They accelerate the coagulation of fine particles. To convert various hardness causing salt into CaCO, 2 x Equivalent wt. Hence calgon conditioning is better than phosphate conditioning. We use cookies to ensure that we give you the best experience on our website. Water treatment describes industrial scale processes to make, a desired use. Performance & security by Cloudflare. For CY6251 CHEM 2 Question Bank/2marks 16marks with answers Click here Calgon is sodium hexa meta phosphate with a. Handbook of Water and Used Water Purification, LECTURE NOTES ON ENGINEERING CHEMISTRY I B. Calgon conditioning is not applicable for the prevention of ___________a) Iron oxide onlyb) Copper depositions onlyc) Sulphurdioxide onlyd) Iron oxide and copper depositionsAnswer: dClarification: Calgon conditioning is not applicable to the prevention of iron oxide and copper depositions. Calgon is added to boiler water to prevent ___________ a) Foaming b) Sludge and scale formation c) Priming d) Corrosion View Answer 3. Four different kinds of cryptocurrencies you should know. It is also used as a coolant in power and chemical plants. Homonuclear Diatomic Molecules; Plots of molecular orbital; Electronic configurations; Energy level diagrams; Hybridization in LiF What is defined as the concentration of dissolved solute in. On which of the following factors diffusion does not depend? You can email the site owner to let them know you were blocked. Explanation: The quantity ofcalgon tobe addedtopreventscaleand sludgeformationis 0.5-5 ppm. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Hard water can cause "Scaling" inside the pipes which transport water. In calgon Conditioning, the added calgon forms soluble complex compound with CaSo4, thereby it prevents the scale and sludge formation in water. to boiler water in order to prevent the scale formation. Calgon Conditioning Specification for potable water as per Bureau of Calgon is Sodium hexa meta phosphate i.e. Calgon prevents limescale build-up in washing machines all over the world to protect the heating element, pipes and drum of the machines. Q: What is the substance, present in a larger quantity that tends to At higher temperature, calgon converts calcium salts into soluble complexes so they are easily removed. 7. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Is calgon conditioning applicable to low or high pressure boilers or both? Calgon is added to boiler water to prevent - study4goal.com Which of the following is not used in colloidal conditioning?a) Keroseneb) Tanninc) Agar-agard) VinegarAnswer: dClarification: Kerosene, tannin and agar-agar are used in colloidal conditioning. For CY6251 CHEM 2 ImportantQuestions/AnswerKey Click here 92.243.17.49 Calgon converts the scale forming impurity like CaSO$_{4}$ into _____ A. Soluble complex compound B. Insoluble complex compound C. Soluble acids Why is calgon treatment better than phosphate conditioning? Engineering 2023 , FAQs Interview Questions. Cloudflare Ray ID: 7d109ee2deca03c3 A boiler is the collector of the boiler systems. The amount of soda and lime required for the removal of hardness is given by the, where 74, 106 and 100 are the mol. Calgon converts the scale forming impurity like CaSO4 into soluble complex compound. View Answer Calgon is added to boiler water to prevent ___________ Options A : Foaming B : Sludge and scale formation C : Priming D : Corrosion View Answer Calgon conditioning is not applicable for the prevention of ___________ Options A : Iron oxide only B : Copper depositions only C : Sulphurdioxide only D : Iron oxide and copper depositions
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