IB DIPLOMA PROGRAMME PROGRAMME DU DIPLÔME DU BI PROGRAMA DEL DIPLOMA DEL BI M07/5/MATME/SP2/ENG/TZ1/XX 22077304 mathematics staNDaRD level PaPeR 2 Tuesday 8 May 2007 (morning) 1 hour 30 minutes INSTRUcTIONS TO cANDIDATES not open this examination paper until instructed to do so. Do Answer all the questions. Unless otherwise stated in the question‚ all numerical answers must be given exactly or correct to three significant figures. 2207-7304 8 pages © IBO 2007 http://www
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EXPERIMENT 2: SYNTHESIS OF ORANGE II (2-NAFTHOL ORANGE OBJECTIVE 1. To produce dye based to the coupling of diazonium. 2. To understand the characteristic of dye orange II. INTRODUCTION The first dye was introduced by William Henry Perkin on 1856. It can be produced by the coupling of diazonium sulfanilic acid with nafthol in alkaline solution.. This was the common method used to produce dye nowadays. In this experiment‚ dye produced was the orange II. Azo compound is compound that contain
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25: ‘Stability‚ rather than volatility‚ now characterises voting behaviour at UK general elections.’ Discuss. 5: Explain the term representation as used in the passage. 10: Using your own knowledge as well as the passage‚ explain why the First-Past-the-Post system has rarely resulted in coalition government at Westminster. 25: ‘The UK would benefit greatly from the wider use of referendums.’ Discuss. 5: Explain the term Constituency Labour Parties (CLPs) as used in the extract. 10: Using
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CHEMISTRY III : (CHEMISTRY & YOU) 1 PRETEST 1. The science that tackles the study of matter‚ its structure and the changes in composition that matter undergoes is a. Astrology c. Ecology b. Chemistry d. Physics 2. When a chemist performs an experiment‚ the quantity that is being tested is the a. control c. theory b. law d. variable 3. Juan is comparing how many kilos of rice can be contained in a sack. What process is he doing? a. counting c. measurement b. interpolation
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ical Chemistry 1.which of the following pairs of compound will react? iC3H6+Br2 iiC3H6+Cl2 in sunlight iiiC3H6+H2O in the presence of sulphuric acid ivC3H6+H2O in the presence of concentrated sulphuric acid a.i b.i‚iii c.i‚ii‚iii d.all 2.liqiud y reacts with magnesium metal to produce a gas that burns with a pop sound when a flaming wooden splint is placed near it.liqiud y is most likely a compound that has the formula a.c2h5oh b.hcooh c.h3cooch3 d.c6h14 3.a compound p has the
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Invasion of lahad datu Introduction Attention gatter: o Did u know that resemblance of massacres Tausug and Bajau Jabidah by Marcos in 1968 has caused a large war which erupted on 1972 with the invasion of lahad datu? o What happened in Jabidah massacre 1968 was a war against Marcos MNLF (Moro National Liberation Front) that caused havoc which destroyed the unity Tausug and the Sultanate sulu a long time ago o Sultan Jamalul Kiram III sent his army which was led by his brother “Raja Muda”
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Chemistry Gen: Course Description Year 2 PART - II CGT 21a Unit I. Basic physical chemistry I * Gaseous state: Gas laws‚ kinetic theory of gas‚ collision and gas pressure derivation of gas laws from kinetic theory‚ average kinetic energy of translation. Boltzmann constant and absolute scale of temperature‚ Maxwell’s distribution law of molecular speeds (without derivation)‚ most probable‚ average and root mean square speed of gas molecules‚ principle of equipartition of energy (without
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1 in vapour state sulphur partly exists as S2 molecule which has 2 unpaired electrons in the antibondind pi orbitals jus lyk oxygen and thus exhibits paramagnetism. 2 An interhalogen compound is a molecule whose atom contains two or more different halogen atoms (fluorine‚ chlorine‚ bromine‚ iodine or astatine). Most interhalogen compounds known are binary (composed of only two distinct elements). Their formulas are generally XYn‚ where n = 1‚ 3‚ 5 or 7‚ and X is the less electronegative
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Lisle Candidates should remove the formula sheet and answer sheet from the end of the paper. Write your number and teacher’s name on the answer sheet and this question paper immediately. General Instructions Total marks – 100 marks • Reading time – 5 minutes • Working time – 2½ hours • Write using black or blue pen • Calculators may be used • A formulae sheet is provided at the back of this paper Section I • • • Pages 2–7 22 marks Attempt Questions 1 – 22 Allow about
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www.ccsenet.org/ijc International Journal of Chemistry Vol. 2‚ No. 2; August 2010 One-pot Preparation of β–amino Carbonyl Compounds by Mannich Reaction Using MgO/ZrO2 as Effective and Reusable Catalyst Deepak.M. Nagrik (Corresponding author) Department of Chemistry‚ PLIT and MS Buldana-443001‚ M.S.‚ India E-mail: dmnagrik@rediffmail.com D.M.Ambhore P.G.Department of Chemistry‚ Jijamata Mahavidyalaya Buldana-443001‚ M.S.‚ India Manoj.B. Gawande (Corresponding author) Departamento de Química
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