ACID/BASE You might need to know the following K values: CH3COOH Ka = 1.8 x 10–5 Benzoic Acid Ka = 6.5 x 10–5 HNO2 Ka = 4.5 x 10–4 NH3 Kb = 1.8 x 10–5 HF Ka = 7.2 x 10–4 H2S Ka = 5.7 x 10–8 HSO4– Ka = 1.2 x 10–2 HS– Ka = 1.2 x 10–13 HCOOH Ka = 1.8 x 10–4 HOCl Ka = 3.0 x 10–8 SIMPLE ACIDS AND BASES 1. According to the Brønsted–Lowry definition‚ which species can function both as an acid and as a base? (A) Cl– (B) SO42– (C) NH4+ (D) HCO3– (E) H3O+ 2. Which of the following
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1. Colour Fastness to Light This method is intended for accessing the resistance of the colour of textiles to the action of daylight. Principle: A specimen of the textile is exposed to the light from a Xenon arc lamp under prescribed conditions‚ along with eight dyed wool standards. The fastness is assessed by compared the fading of the textile with that of the standards. Apparatus and Materials: - Blue standards - Humidity Test Control Fabric - Light fastness test apparatus containing
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CORE SYLLABUS for National Eligibility-Cum-Entrance Test (NEET) for Admission to MBBS/BDS Courses The Medical Council of India (MCI) recommended the following syllabus for National Eligibility-cum-Entrance Test for admission to MBBS/BDS courses across the country (NEET-UG) after review of various State syllabi as well as those prepared by CBSE‚ NCERT and COBSE. This is to establish a uniformity across the country keeping in view the relevance of different areas in Medical Education. PHYSICS
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room temperature. • The above steps were repeated with a sample with healthy tissue. • These solutions were then poured into separate wells o a sodium polypectate solution agar plate along with two controls of PG and boiled PG. • This was left for incubation at 37C for 24 hours. • The plates were then flooded with 2m HCL to precipitate any sodium polypectate out of solution. • The agar plate was examined against a dark surface to measure any zones of clearance around cell wall. Sometimes
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Components. 4th ed. Cornwall‚ Great Britain: International Ltd de Man J. 1999. Principles of Food Chemistry. Gaithersburg‚ Maryland: Aspen Publishers‚ Inc. Johnston CH‚ Schauer L‚ Rapaport S‚ Deuel jr. HJ. 1943. The Effect of Cooking with and without Sodium Bicarbonate on the Thiamine‚ Riboflavin‚ and Ascorbic Acid Content of Peas. Department of Biochemistry. University of Southern California Medical School‚ Los Angeles Hynninen PH. 1973. Chlorophylls: Preparation and Purification of Some Derivatives
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The Earth’s atmosphere has changed over billions of years‚ but for the past 200 million years it has been much as it is today. We are‚ however‚ causing our atmosphere to change by human activity. Burning fossil fuels and deforestation are two examples of human effect on the environment. Composition of the Earth’s atmosphere The composition of air You need to know the proportions of the main gases in the atmosphere. The Earth’s atmosphere has remained much the same for the past 200 million years
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DELA CRUZ‚ CYNTHIA GRACE C. 2008-13749 FS 125 March 10‚ 2012 ANTIMICROBIAL AGENTS 1. Introduction Food preservation has long been practiced since the olden times with processes such as heating ‚ drying‚ fermentation and refrigeration. In spite of this‚ physical methods are not enough to eliminate all microorganisms found in foods. Therefore‚ antimicrobial agents are needed to destroy these foodborne pathogens‚ so that the food will have a longer shelf-life. As technology progresses‚ improvements
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Influence of Malonate and Sodium Fluoride on the Activity of Enzyme Succinate Dehydrogenase to Assess Inhibitors of Cellular Respiration Thaovy Mai Tran BI 151.5233 (Winter 2013) Todd Tiano 03/25/2013 Introduction Most organisms produce adenosine triphosphate (ATP) as a source of energy for cellular work‚ using cellular respiration. Cellular respiration
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17. What is Joule – Thomson effect? 18. How many numbers of moles of glucose are present in 540 g of glucose? 19. The empirical formula of a compound is CH2O. Its M.W is 90.Calculate the Molecular formula of the compound. 20. Calculate the Oxidation numbers of bold element in the following. A) K2Cr2O7 b) KMnO4 c) K2MnO4 d) C12H22O11 d)Cr2O3 e)CrO5 f)H2S2O8 g)CaOCl2 h)H2SO5 i)Fe3O4 j) N3H 21. What are the disproportionation reactions? Give examples. 22. State the first law of thermodynamics
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sterilization and to provide a well-adopted technique for callus induction in these varieties by using M.S and N6 media along with different concentrations of growth hormones. Seeds were used as explant source and to avoid chance of contamination sodium hypochlorite and ethanol at the rate of 50% and 70% were used respectively. Best response toward callus induction were observed for Bas-385 on both MS and N6 media however N6 media was proved to be best. Calli obtained from Bas-385 were friable and vigorous
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