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. Add a Comment Cancel reply. Surface Tension Question and Answer. Paediatrics MCQ – Boy with fever and rash . 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. Which of the following is the endotoxin? B. Displacement of a small amphiphile by a polymer. 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. When used as soaps, these can mechanically remove the bacteria through scrubbing. oil and water). Total MCQ Papers (4), Total MCQs (100) 1. 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). b) It has an effect only on the solubility of nonionic surfactants. B) They have antibodies on their surfaces... HEPA filters are used to remove microbes from A. air. Question 1 ... What is the main result of adding surfactants into a liquid composed of two immiscible phases such as oil and water? NPTEL provides E-learning through online Web and Video courses various streams. c) The solubility of ionic surfactants increases. C. Displacement of an acid by a base. C) the L chains. Surfactants are categorized into petrochemical and bio-based, depending on the raw material used for the synthesis. B. liquids. REFERENCE. E. All of the choices are correct. 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. They can be produced from either synthetic or natural raw materials and their versatility makes them key to both the quality of … The important part to understand here is that Polar molecules are attracted to other polar m… Which of the following is a fomite? 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. We explained this a bit in our post on cosmetic emulsionsbut basically compounds can be classified as polar and non polar. Herbal Or Plant Material 8. Chapter 9: Multiple choice questions. SURFACE TENSION PAPER – 1: 2. B) the H chains. c. Absorption lamellar bodies to the air-liquid. 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 . Which explanation demonstrates safe walker use? SURFACE TENSION PAPER – 3: 4. Dry granulation 7) What is the action of convertase enzyme? Answer the following questions and then press 'Submit' to get your score. SURFACE TENSION PAPER – 4: Access the above question papers link which contain MCQs (Multiple choice questions) on Surface Tension. 13) Which is most useful to predict the risk of NRDS? Surfactants adsorb preferably at interfaces where they find the energetically most favourable conditions due to their two-part structure. 2) Which has the highest concentration in surfactant? d) The solubility of nonionic surfactants … Learn more about surfactants in this article. vi | P a g e PREFACE This book gives multiple choice questions for selected courses in Chemical Engineering. B. gain water. If the answers is incorrect or not given, you can answer the above question in the comment box. c 2- The frequency needed to produce tetanus: a- is increased by cooling. 2. Surfactants are smart chemicals that may be completely invisible to us most of the time but which benefit our lives in many different ways. A. fomites B. water C. droplet nuclei D. aerosols E. dr... All of the following are true about agar except ______. A. 16) Pulmonary alveolar proteinosis - True statement, 17) Pulmonary alveolar proteinosis - False statement. Surfactant production starts at 20 weeks and peaks at 35 weeks. 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’. Dec 19,2020 - Test: Viscosity And Surface Tension | 20 Questions MCQ Test has questions of Class 11 preparation. Biology MCQ Animal Biology Lung surfactants function to decrease the likelihood of collapse of the alveoli when air is expired. Abstract. Ophthalmology – MCQ 8 – A patient with unilateral proptosis . A two hour discussion on physiology topics and their applied MCQs. D. An emulsion stabilised by surfactants. The multiple choice questions are intended for students at both C. blocking transport out from the organism. MCQ on Surface Chemistry with answers, Test: 2, Total Questions: 15 Without surfactants, soaps wouldn’t mix with the water, but would just roll off the water, making the cleaning process much more difficult. 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 work by A. coating the organism, preventing interaction with its environment. What is competitive adsorption or competitive displacement, with reference to the surface adsorbed layer? 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 Stoke’s equation is expressed as (a) 2 V=2r (d – d )g12 9η (b) 2 V=2r (d – d )g12 18η Non-polar molecules like oils have enough electrons in them to make them stable. These professions play a vital role in health care management. AIPGMEE 2011 – MCQ 15 – Nerve injury in supracondylar fracture . 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? MCQ (nerve and muscles) Choose the best ( √)answer: 1- The energy of muscle contraction is derived from the following except: a- ATP. A. Displacement of a polymer by a small amphiphile. A client with a walker is being discharged from the orthopedic unit to home. NEET Chemistry is the scoring paper in the medical entrance examination. Which of the following is NOT a characteristic of B cells? Perfumes And Colors 7. 8) What is the most important step in metabolism of surfactant? c- is increased in fatigue. Instructions. A client with a walker is being discharged from the orthopedic unit to home. 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