FIITJEE Talent Reward Exam for student presently in Class 10 PAPER–1 Time: 3 Hours Maximum Marks: 214 Instructions: Caution: Question Paper CODE as given above MUST be correctly marked in the answer OMR sheet before attempting the paper. Wrong CODE or no CODE will give wrong results. 1. This Question Paper Consists of 7 Comprehension Passages based on Physics‚ Chemistry and Mathematics which has total 29 objective type questions. 2. All the Questions are Multiple Choice Questions having only
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NPTEL – Chemistry – Reagents and Organic reactions Module II Lecture 14 Reduction Reactions 2.1.1 Lithium Aluminum Hydride (LAH) 2.1.1.1 Introduction Lithium aluminum hydride (LAH) is a strong reducing agent with chemical formula LiAlH4. It can reduce a variety of functional groups such as aldehydes‚ esters‚ acids‚ ketones‚ nitriles‚ epoxides and azides. It vigorously reacts with water and all the reactions are performed in polar aprotic solvents. 2.1.1.2 Preparation It was first
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felt like people were more convivial with me. I think that because I woke up thinking that it was going to be an awful day‚ I made choices and acted in ways that made that idea come to fruition. This is called “self-fulfilling prophecy”. According to Alder‚ Rosenfeld & Proctor (2013)‚ “A self-fulfilling prophecy occurs when a person’s expectations of an event‚ and her or his subsequent behavior based on those expectations‚ make the outcome more likely to occur than would otherwise have been true
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Experiment 3: Stoichiometry of a Precipitation Reaction Abstract: In this experiment the objectives were to try and predict the amount of product that was produced in the precipitation reaction of calcium carbonate by using stoichiometry. Then learn how to figure out the actual yield‚ theoretical yield and percent yield of the experiment. Experiment and Observation: The first step in the experiment was to weigh 1g of CaCl2 +2 H2O‚ then pour it into the 100mL
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and cyclohexene by the principle of stem distillation. A chaser solvent is added to recover of the reaction product that may get lost in the fractionating column. Cyclohexene itself is used in manufacturing of adipic acid‚ hexahydrobenzoic acid‚ maleic acid‚ cyclohexanol and cyclohexeneoxide. Further‚ it is used as a solvent. III. Equations H3PO4 + H2O IV. Mechanisms Step 1: Protonation of the hydroxyl group (fast equilibrium) Step 2: Ionization to a carbocation (slow‚ rate-limiting)
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Aspirin acts as an acetylating agent where an acetyl group is covalently attached to a serine residue in the active site of the COX enzyme. The synthesis of aspirin is classified as an esterification reaction. Salicylic acid is treated with acetic anhydride‚ an acid derivative‚ causing a chemical reaction that turns salicylic acid’s hydroxyl group into an ester group (R-OH → R-OCOCH3). This process yields aspirin and acetic acid‚ which is considered a byproduct of this reaction. Small amounts of sulfuric
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Shannon L. Alder wisely declared that “One of the greatest regrets in life is being what others would want you to be‚ rather than being yourself.” This implies that every single person is talented in various ways own way. Do not conform to the standards of other people‚ because you are not them. This will force you to act a certain way‚ dress a certain way‚ think a certain way. Now‚ wouldn’t it be easier to just be yourself. If you in fact do fit the standards of other people while you act they way
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consider that sugar has an impact in regard to obesity. Many people believe fat is the only factor to contribute to weight gain. “The obesity epidemic is largely the result of changes in a diet that has increasingly included sugary and fatty foods” (Alder 1). Hence‚ sugar is one of many reasons obesity has become an epidemic. It is difficult to avoid these problems because most foods today contain a surplus of sugar. Along with this‚ we mainly consume sugary foods because of
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ChE 101 Lab Exercise 4 05 December 2012 Materials Balance (Non-reacting Systems) THR/WRU 1. A 40-mol-% aqueous ethanol solution is to be distilled into two streams: a distillate with 98% ethanol and a side stream with 60%. 98% of the alcohol in the feed is to be recovered in these two products; only 2% goes into the bottoms. If the bottoms product contains 2% ethanol‚ calculate the amount of the different streams per 1000 kmol of feed stream. Given: Recovery = 98% of ethanol in
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Case Study: Smoothie King Summary Smoothie King is the original nutritional smoothie bar and health marketplace since 1987 and within one year realized the key to their success and growth would be to develop a franchise system. The Smoothie King brand has been recognized by Entrepreneur Magazine as being # 1 in the juice bar category for 15 consecutive years and has seen steady growth with approximately 610 franchised units in over 35 US states (www.worldfranchising.com). As with every franchise
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