Surfactants work by A. coating the organism, preventing interaction with its environment. In the dyeing of textiles, surfactants help the dye penetrate the fabric evenly. What is competitive adsorption or competitive displacement, with reference to the surface adsorbed layer? More Topics. a) The solubility increases for all types of surfactants. A) water B) droplets from a sneeze C) pus D) insects E) a hypodermic needle Answer: E. The process of dissolving the envelope and capsid to release the viral nucleic acid is A. Adsorption B. Pharmacology – MCQ 56 – Treatment of H. Pylori infection . Question 1 ... What is the main result of adding surfactants into a liquid composed of two immiscible phases such as oil and water? Would you like to get the full Thesis from Shodh ganga along with citation details? FOREWORD Medical & Pharmacy are fast growing professions with a wide range of opportunities open to the students after a basic degree. Neonates less than 35 weeks are prone to develop NRDS (neonatal respiratory distress syndrome). B. gain water. REFERENCE. C. blocking transport out from the organism. c) The solubility of ionic surfactants increases. E. An emulsion stabilised by drugs. Surfactants are categorized into petrochemical and bio-based, depending on the raw material used for the synthesis. HEPA filters are used to remove microbes from, Bacteria living in a freshwater stream that are moved to salty seawater would, The process of dissolving the envelope and capsid to release the viral nucleic acid is, Principles and Practices of Rehabilitation. Surfactants are smart chemicals that may be completely invisible to us most of the time but which benefit our lives in many different ways. Distant metastases are found in 20% of patients at presentation. B. liquids. d) The solubility of nonionic surfactants … All of the following are true about agar except ______. The specificity of an antibody is due to A) its valence. NEET Chemistry is the scoring paper in the medical entrance examination. Preservatives 6. A) They originate in bone marrow. The nurse must teach the client how to use a walker properly. Functional Raw Materials 1. Surface Tension Trivia Questions and Answers PDF. 9) Which is vital for surfactant function? C. human tissues. Which of the following is a fomite? MCQ on Surface Chemistry with answers, Test: 2, Total Questions: 15 WATER:- It is the main ingredient of cosmetics formulation. Surfactant production starts at 20 weeks and peaks at 35 weeks. b- is decreased in red muscles. SURFACE TENSION PAPER – 1: 2. 3) What is the most important function of surfactant? A. c- lactic acid. Test your knowledge of pulmonary surfactant and the importance of this substance using an interactive quiz. What are surfactants? welcome to the page and this little free MCQ sample test will give you an outline of how the exam looks ,what is the syllbus and the type of MCQ can be asked in the real exam.please go through the MCQ sample test.. HUMAN PHYSIOLOGY . c. Absorption lamellar bodies to the air-liquid. Surfactant, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties. Surfactants 5. 46 Physical Pharmacy 47 (8.314 J mol –1 K ), T is temperature in kelvins, c is the concentration in mol m–3 and x has a value of 1 for ionic surfactants in dilute solution. Surfactants spontaneously construct a variety of self-organized structures in solvents, which noticeably depend on the chemical structures of surfactants as well as interaction manners with the solvents. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Total MCQ Papers (4), Total MCQs (100) 1. These professions play a vital role in health care management. B) the H chains. If the answers is incorrect or not given, you can answer the above question in the comment box. Paediatrics MCQ – Boy with fever and rash . Surfactants Glidants Binders Question 29 [1.00 pt(s) ] Which of the following is the most commonly used tablet lubricant Talc Magnesium stearate Mineral oil Glycerine Question 30 [1.00 pt(s) ] Which of the following procedures have the shortest time for tablet manufacturing? The multiple choice questions are intended for students at both D) the constant portions of the H and L c... Bacteria living in a freshwater stream that are moved to salty seawater would A. be in a hypotonic solution. Non-polar molecules like oils have enough electrons in them to make them stable. When used as soaps, these can mechanically remove the bacteria through scrubbing. M. Miyake, Y. Yamashita, in Cosmetic Science and Technology, 2017. If the answers is incorrect or not given, you can answer the above question in the comment box. Without surfactants, soaps wouldn’t mix with the water, but would just roll off the water, making the cleaning process much more difficult. D. medical instruments. How surfactants will facilitate or aid wetting of hydrophobic materials in liquid (a) By decreasing the solid-liquid interfacial tension (b) By increasing the solid-liquid interfacial tension (c) Both (d) None 23. Ophthalmology – MCQ 8 – A patient with unilateral proptosis . AIPGMEE 2011 – MCQ 15 – Nerve injury in supracondylar fracture . Instructions. b- muscle glycogen. D. An emulsion stabilised by surfactants. To understand surfactants it’s first important to understand a property of all chemicals, polarity. Biology MCQ Animal Biology Lung surfactants function to decrease the likelihood of collapse of the alveoli when air is expired. Chapter 9: Multiple choice questions. Which of the following is NOT a characteristic of B cells? Answer the following questions and then press 'Submit' to get your score. 14) What is the major disability in NRDS survivors? Stoke’s equation is expressed as (a) 2 V=2r (d – d )g12 9η (b) 2 V=2r (d – d )g12 18η 7) What is the action of convertase enzyme? Abstract. Thus stability and quality of final product is dependent on the purity of water used so pure water should be … C) the L chains. A client with a walker is being discharged from the orthopedic unit to home. MCQ Examination Choice the single best answer 1- Which of the following statements is FALSE regarding laryngeal carcinoma? Herbal Or Plant Material 8. Polar molecules, like water, have an imbalance in electrons which make them attracted to other imbalanced molecules. B. blocking transport into the organism. The important part to understand here is that Polar molecules are attracted to other polar m… If the answers is incorrect or not given, you can answer the above question in the comment box. Surfactants added to cleaning agents, like detergent, allow the detergent to mix into water, helping cleaning agents remove dirt from the surface being cleaned. The area A occupied by a surfactant molecule at the solution–air interface can be calculated from A = 1/N A 23Γ 2 where N A is the Avogadro number (6.023 × 10 molecules SURFACE TENSION PAPER – 4: Access the above question papers link which contain MCQs (Multiple choice questions) on Surface Tension. Which of the following is a direct contact method of microbe transmission? The term surfactant was originally coined by Antara Products in the 1950s a to stand for SURFace-ACTive-AgeNT, which is an attempt to explain ‘how surfactants work’. 2. b) It has an effect only on the solubility of nonionic surfactants. Learn more about surfactants in this article. 16) Pulmonary alveolar proteinosis - True statement, 17) Pulmonary alveolar proteinosis - False statement. Sources of biosurfactants: Many of the biosurfactant producing microorganisms are found to be hydrocarbon degraders (Willumsen and Karlson, 1997; Volkering et al., 1998).However in the past decades, many studies have showed the effects of microbially produced surfactants not only on bioremediation but also on enhanced oil recovery (Volkering et al., 1998; Tabatabaee et al., 2005). Which explanation demonstrates safe walker use? Surfactants emulsifiers and dispersants have different hydrophilic-lipophilic balance (HLB) Emulsifiers for water-in-oil systems 3.0 - 6.0 Dispersants 12.0 - 17.0 2) Which has the highest concentration in surfactant? B. Squamous cell carcinoma of the larynx represents approximately 1 % of malignancies in men. Practice more on a regular basis with these NEET Chemistry objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. vi | P a g e PREFACE This book gives multiple choice questions for selected courses in Chemical Engineering. Dec 19,2020 - Test: Viscosity And Surface Tension | 20 Questions MCQ Test has questions of Class 11 preparation. 12) Commonest cause of respiratory distress in preterm infant is. – surfactants with HLB’s of 1 to 3 • Preparing water-in-oil emulsions – surfactants with HLB’s of 4 to 6 • Preparing self emulsifying oils – surfactants with HLB’s of 7 to 10 • Preparing oil-in-water emulsions – surfactant blends with HLB’s of 8 to16 • Detergent solutions – surfactants with HLB of 13 to 15 Surface Tension Question and Answer. A. Displacement of a polymer by a small amphiphile. MCQ (nerve and muscles) Choose the best ( √)answer: 1- The energy of muscle contraction is derived from the following except: a- ATP. Surfactants can be a nuisance to papermakers when they stabilize undesirable foams, make it more difficult to hydrophobically size paper, hurt dry strength of paper, or hurt fine-particle retention. oil and water). D. disrupting membrane integrity. 13) From the followings which statement is true for surfactants above the Krafft temperature? Perfumes And Colors 7. A. fomites B. water C. droplet nuclei D. aerosols E. dr... All of the following are true about agar except ______. d- Creatine phosphate. We explained this a bit in our post on cosmetic emulsionsbut basically compounds can be classified as polar and non polar. Which of the following is NOT a characteristic of B cells? They can be produced from either synthetic or natural raw materials and their versatility makes them key to both the quality of … Which of the following is the endotoxin? Based on your knowledge of lipids and amphipathic molecules, which of the following explains the mechanism by which the dipalmitoyl phosphatidylcholine (DPPC) … 8) What is the most important step in metabolism of surfactant? B) They have antibodies on their surfaces... HEPA filters are used to remove microbes from A. air. c. Conversion of large aggregates to small aggregates. please find sample mcq test from the above reference for the preparation of NAPLEX,PEBC,APEC,HAAD and other pharmacy entrance examinations. A client with a walker is being discharged from the orthopedic unit to home. Get PDF of Power point presentation here : https://goo.gl/TRxIAl Get Entire 2 hour video here : https://goo.gl/SrQBcL. Surfactants adsorb preferably at interfaces where they find the energetically most favourable conditions due to their two-part structure. Surfactants are incorporated in preparations like toothpaste; All of the mentioned ... MCQ Multiple Choice Questions and Answers on Surface Tension. 6) Tubular myelin of surfactant is formed from -. SURFACE TENSION PAPER – 2: 3. c- is increased in fatigue. B. Displacement of a small amphiphile by a polymer. Dry granulation Here, you will discover the NEET Chemistry MCQ Questions for all Concepts as per the latest syllabus. Start studying RESPIRATORY PHYSIOLOGY - SURFACTANT (17 MCQS). A two hour discussion on physiology topics and their applied MCQs. July 7, 2020 huzefakifayet GATE Exam, GPAT Preparation, How to prepare for gpat, MCQ, ... Bactericidal chemicals are used along with surfactants, in which, surfactants helps these chemicals to enter into the microorganism easily and produce cidal effects. Add a Comment Cancel reply. Due to depleting petroleum resources and negative environmental impacts associated with their production and use, the surfactants industry is in need of bio-based surfactants. E. All of the choices are correct. SURFACE TENSION PAPER – 3: 4. Which of the following is a direct contact method of microbe transmission? 10) When does surfactant production peak? This generalization basically denotes that this general classification of compounds tends to interact at the interface of two immiscible phases (i.e. This test is Rated positive by 88% students preparing for Class 11.This MCQ test is related to Class 11 syllabus, prepared by Class 11 teachers. 13) Which is most useful to predict the risk of NRDS? c 2- The frequency needed to produce tetanus: a- is increased by cooling. NPTEL provides E-learning through online Web and Video courses various streams. C. Displacement of an acid by a base. The surface adsorbed layer online Web and video courses various streams of nonionic surfactants … M. Miyake Y.... Is incorrect or not given, you can answer the above question in the comment box patients at presentation on... May be completely invisible to us most of the following is not a characteristic of cells. 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