approximate of 2 to 3 million people in a year. Mostly found on leading stores are the commercialized chemical based mosquito coils. These coils contains high level of toxic chemicals that cause respiratory illness‚ likely occur to children having 5 yrs. old and below of age. Like DEET (N‚ N-Diethyl-meta-toluamide) that are widely used
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Keghan Chapter 8 MULTIPLE CHOICE QUESTIONS Topic: Structure Elucidation 1. An alkene adds hydrogen in the presence of a catalyst to give 3‚4-dimethylhexane. Ozonolysis of the alkene followed by treatment with zinc and acetic acid gives a single organic product. The structure of the alkene is: CH3 A) CH3CH=C-CHCH2CH3 (cis or trans) CH3 CH3 B) CH3CH2C=CCH3 (cis or trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E) CH3CH2CHCHCH=CH2
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Candidate name…………………………………………………………………….. MINISTRY OF EDUCATION MASALA SECONDARY SCHOOL BOARD MOCK EXAMINATION 2014 SCIENCE 5124/3 PAPER 3 (CHEMISTRY) 1hour 15minutes Additional materials: Monday 30th July 2014. Answer paper INSTRUCTIONS TO CANDIDATES Write your name‚ centre number and candidate number at the top of this page all separate Attempt all questions in SECTION A and only TWO questions in SECTION B SECTION A (45 marks)
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Organometallic preparation and addition to carbonyls‚ Wittig reagent preparation and Wittig rxn‚ Wolff‚ H-based nucleophile carbonyl reduction‚ imine formation‚ reductive amination (rxn only)‚ ketal/acetal formation‚ dithiane chemistry (rxn only)‚ alpha-bromination of ketones‚ -COOH properties (the trends on HW4)‚ Fischer‚ acidic/basic hydrolysis of esters/amides/nitriles‚ CH2N2‚ acid chloride formation (rxn only)‚ acid chloride rxns with esters and amides. 2 Rxn of carboxyllic acid derivatives
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Chapter 7 term Sheet The Road to Revolution 1. Republicanism - a just society as one is in which all citizens willingly subordinate their private‚ selfish interests to the common good. 2. Radical Whigs - group of British political commentators; widely read by the colonists‚ feared the threat to liberty posed by the arbitrary power of the monarch and Parliament; warned to colonists to be watchful of any violations to their rights or corruption in leadership; hated use of patronage and bribes
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Combustion cont.. • Write the chemical formula and the balanced chemical equation for the combustion of of 3‚4 diethylnonane. Incomplete Combustion &Complete Combustion Classify the following reactions as complete or incomplete combustion. Chapter 9 Hydrocarbons from Petroleum 9.6 Summary: Complete and Incomplete Combustion Complete Combustion hydrocarbon + (excess) O2(g)> CO2(g) + H2O(g) Incomplete Combustion hydrocarbon + (insufficient) O2(g) > xC(s) + yCO(g) + zCO2(g) + H2O(g)
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level 5070/31 CHEMISTRY Paper 3 Practical Test October/November 2010 CONFIDENTIAL INSTRUCTIONS *4711088250* Great care should be taken to ensure that any confidential information given does not reach the candidates either directly or indirectly. The Supervisor’s attention is drawn to the form on page 7 which must be completed and returned with the scripts. If you have any problems
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beast was mentioned again. We see this later at the meeting in chapter 5‚ when one of the littluns mentions the rest of the littluns are still scared of the beast. The biguns again try to dismiss it as the younger children having an overactive imagination‚ but then when they fail to prove them wrong‚ like failing to create a proper vaccine or treatment for a disease‚ they to become infected with fear. Now‚ with the fear
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Practice problems Chapter 6 Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which one of the following is correct? A) ν ÷ λ = c B) ν = cλ 1) C) νλ = c D) λ = c ν E) ν + λ = c 2) The photoelectric effect is __________. A) a relativistic effect B) the ejection of electrons by a metal when struck with light of sufficient energy C) the darkening of photographic film when exposed to
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Antonym Meaning Sentence 1. embark verb Launch Stop Get on transportation object 2. dismay verb Anxiety Calm Dissapointed feeling 3. queue noun Line Disorder Line of people waiting 4. burden noun Duty Tranquility Something you carry and its heavy 5. summon verb Request Reply Call to a place 6. advocate noun Defender Enemy Person supporting an idea 7. gaudiness noun 8. hazel adj. 9. plunger noun 10. loathe verb
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