mark ) (a) CH3CH=CH2 (b) H2C=CH2 (c) HC C (d) None of the above (Q.4) (CH3)3CMgBr on reaction with D2O gives: ( 1 mark ) (a) (CH3)3CD (b) (CH3)3COD (c) (CD3)3CD (d) (CD3)3OD (Q.5) The silver salt of fatty acid on refluxing with an alkyl halide gives an: ( 1 mark ) (a) Acid (b) Ester (c) Ether (d) Amine (Q.6) Which of the following is the most reactive towards nucleophilic substitution reaction? ( 1 mark ) (a) C6H5Cl (b) CH2=CHCl (c) ClCH2CH=CH2 (d) CH3CH=CHCl (Q.7) The molecule
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Introduction The purpose of this experiment was to find the identity of the unknown compound #12. This was done both qualitatively and quantitatively. The qualitative observations were used to determine the functional group that was in the unknown‚ the quantitative results were used to determine the molar mass through Duma’s method. The types of compounds that were used in testing were all functional groups‚ Aldehyde‚ Ketone‚ Alcohol and‚ Ester. Functional groups are a portion of a molecule that
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medium‚ or strong). Each of the above items is worth 2.5 points‚ for a total of 10 points per question. EXAMPLE OCH 3 OH STRUCTURE CHOICES: O O X OH Z Y SPECTRUM WITH KEY BANDS LABELED MOLECULE ASSIGNED: X MAIN FUNCTIONAL GROUP: Carboxylic acid KEY BANDS: Bond: O–H Approximate frequency: 3000 Shape: broad Intensity: strong Bond: C=O Approximate frequency: 1700 Shape: medium Intensity: strong INCOMPLETE OR UNCLEAR ANSWERS WILL RECEIVE NO CREDIT. STRUCTURES OH B A C O
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FIITJEE Solutions to NTSE-2012 –Stage-I (Delhi State) (For Class X Students) Paper-2 SAT DATE OF EXAM : 18-11-2012 Time: 90 Minutes Max Marks: 90 INSTRUCTIONS TO CANDIDATES Read the following instructions carefully before you answer the question. Answers are to be given on a SEPARATE ANSWER SHEET. Use only HB Pencil. 1. Write you Roll No. very clearly (only one digit in one block) on this booklet and on the ANSWER SHEET. 2. This test consists of 90 questions of one mark
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Title:Extraction:Extraction with acid and alkaline Objective: 1. To recover benzoic acid and p-dichlorobenzene from its mixture using acid-alkaline extraction. 2. To determine the percentage recovery and melting point of benzoic acid and p-diclorobenzene. Apparatus:Separatory funnel(250mL)‚Buchner funnel‚beaker. Materials:Benzoic acid‚p-dichlorobenzene‚ether‚10% NaOH‚conc.HCl‚distilled water‚ anhydrous CaCl2. Introduction: Organic compounds in an aqueous mixture can be separated
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BEHAVIOUR OF AMINO ACIDS IN SOLUTION Abstract In this practical the acid-base behaviour of amino acids was assessed. Amino acids are amphoteric. They have the basic (amine) and the acidic (carboxylic) functional groups. These show the same type of equilibrium reactions that all weak acids and bases undergo‚ and the relative amount of each can be altered by adjusting the pH of the solution. For this practical glycine was used as a model to show this unique nature of amino acids. A series of
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ACIDS AND BASES The reason that acid-base reactions are so important is that many of the things you come into contact with on a daily basis are either acids or bases. Most fruits are acids‚ as are carbonated beverages‚ tea‚ and battery acid. Common household bases include baking soda‚ ammonia‚ soap‚ and antacids. What are acids and bases? There are not one but three common definitions used to describe acids and bases: 1. Arrhenius acids and bases 2. Brønsted-Lowry acids and bases 3. Lewis acids
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Experiment 1 Titration curves of amino acids General structure of amino acids (amphoteric type): Zwitter ion C * : α- carbon : α- amino acid NH2 : α- amino group‚ basic (proton acceptor) COOH : α- carboxylic group‚ acidic (proton donor) R : side chain of amino acid Classification of amino acids depending on the nature of side chain:
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________________________ Internal Assessment Criteria Aspect 1 Aspect 2 Aspect 3 Total DCP CE Aim: The aim of this practical is to plot and investigate the pH titration curves for the titration of a strong acid with a strong base and of a weak acid with a strong base‚ and find Ka of the weak acid. Procedure: Part I 1. Pour 30 ml of the HCl solution of unknown concentration in a 100 ml beaker. 2. Add a stirring magnet. 3. Place the beaker on the magnetic heater and activate the rotating motor but not
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CHAPTER 1 Introduction Background of the Study Like many other hygiene convenience‚ shoe polish or can also be called boot polish is usually a wax ‚ cream or paste used by people to shine‚ water proof and restore the appearance of leather shoes. This extends the footwear’s life. This is made up of many kinds of chemicals and because of this; it can cause irritations‚ allergies to us. In our generation‚ shoe polish is used every day and companies produce a lot of it to meet the demands of
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