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Study Resources (Chemistry)

91) How many tripeptides can be formed from serine, alanine, and glycine? A) 6 B) 4 C) 8 D) 10 92) The artificial sweetener Nutrasweet® (aspartame) is not a derivative of sugar, but is actually a small dipeptide. What two amino acids make up the basic structure of Nutrasweet®? A) glutamic acid and phenylalanine.
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51) Which two simple functional groups make carboxyl group? A) Aldehyde and keto groups B) Aldehyde and hydroxyl groups C) Keto and hydroxyl groups D) Ester and hydroxyl groups E) Ester and ether groups 52) Which class of compounds is most oxidized? A) alkanes B) alcohols C) acids D) aldehydes E) ketones 53) What are heterocyclic.
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31) Which of the following could be added across carbon-carbon multiple bonds? I) H2SO4 II) H2 III) H2O IV) NO2 V) HBr A) II), III), and V) B) II), III), and IV) C) I), III), and V) D) I), III), and IV) E) I), II), and III) 32) From the following table select appropriate starting material and reagents required for the.
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41) Nitration of aromatic compound I with HNO3/H2SO4 theoretically can give four different products (A - D). In your opinion, which one(s) is(are) formed? Compound I: Possible products: A) products A and C B) products A and D C) only product B D) products C and D E) only product C 42) The chlorination of benzaldehyde is producing: A).
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41) What is the common name of the following glycose shown in Fischer notation? A) D-glyceraldehyde B) L-glyceraldehyde C) s-glyceraldehyde D) (-)-glyceraldehyde E) D-erythrose 42) Which of the following compounds may display the property of optical isomerism? A) 3-pentanol B) 2-pentene C) 2-bromopropane D) 2-bromobutane E) acetone 43) Choose the.
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31) Choose the INCORRECT statement. A) A levorotatory isomer rotates plane polarized light to the left. B) A chiral atom is said to be asymmetric. C) The absolute configuration is the arrangement of atoms as determined by x-ray studies. D) Molecules that are optically active isomers but not mirror images.
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31) Which of the following structures represents a structure of R isomer of 1-amino-2-propanol? A) B) C) D) E) 32) Which statements regarding chiral compounds are correct? I) "Chiral carbon" is synonymous with "asymmetric carbon". II) The presence of one chiral carbon in a structure results in two possible enantiomers. III) Two enantiomers can.
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  1.1   Multiple Choice Questions 1) Which science is primarily concerned with the study of matter and the changes it undergoes? A) biology B) chemistry C) geology D) physics 2) What is natural philosophy? A) a belief in natural foods B) an experimental approach to philosophy C) an experimental approach to the study of nature D) theoretical speculation about nature 3) The.
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21) Choose the INCORRECT statement. A) In thermal cracking large hydrocarbon molecules are broken down into smaller molecules, ideally, molecules in the gasoline range. B) Reforming converts straight-chain hydrocarbons into branched-chain hydrocarbons. C) Branched-chain hydrocarbons have higher octane numbers. D) Alkylation is the joining of small hydrocarbon fragments to larger.
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61) The formation of isopropanol (rubbing alcohol) through the following hydrolysis is known as what type of general reaction? A) oxidation B) aromatic substitution C) addition reaction D) elimination E) substitution reaction 62) Complete the following reaction: NH3 + CH3Br → A) CH4 + NH2Br B) CH2=NH + H2 +.
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61) Which of the following statements concerning the relationship between the number of elements and the number of compounds is correct? A) The number of elements and the number of compounds are approximately the same. B) The number of elements is much larger than the number of compounds. C) The number of compounds.
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31) ________ is considered by many people to play a central role among the sciences. A) Biology B) Chemistry C) Geology D) Physics 32) Which of the following statements about chemistry is NOT true? A) Chemistry is an important component of the economy of the United States. B) Chemistry affects every area of our daily lives. C) Chemical.
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71) Which of the following alcohols can eliminate water to produce alkene? I) phenol II) HOC(CH3)3 III) HOCH(CH3)2 A) II) and III) B) I), II) and III) C) III) only D) I) and II) E) II) only 72) The common general anesthetic neothyl can be produced by the following dehydration reaction. What is the systematic name of neothyl? A).
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11) DNA contains the sugar ribose. 12) Guanine always pairs with cytosine. 13) Choose the INCORRECT statement. A) About 50 elements occur in measurable concentrations in living matter. B) About 25 elements have functions that are definitely known. C) Oxygen, carbon, hydrogen and nitrogen account for 96% of human body mass. D).
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81) When undergoes positron emission, the product nucleus is ________. A) B) C) D) E) 82) There are three radioactive series: the thorium series, which begins with 232Th, the actinium series which starts with 235U  and the uranium series which starts with what isotope? A) 223Fr B) 238U C) 221Rn.
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1) Radioactive decay series decay by alpha and positron emission. 2) Artificially induced radioactivity is caused by bombarding a nucleus with another particle. 3) Transuraniun elements are elements with atomic numbers greater than 92. 4) Radioactivity is a first order kinetics process. 5) The nuclear binding energy is the energy required to separate the.
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91) Give the condensed structural formula for 2-methylpropanoic acid. A) (CH3)2CHCOOH B) (CH3)2CHCHO C) (CH3)2CHCH2COOH D) (CH3)2COOH E) CH3CH2COOH 92) Give the condensed structural formula for methyl butanoate. A) CH3COOCH2CH2CH2CH3 B) HCOOCH2CH2CH2CH3 C) CH3CH2CH2COOCH3 D) CH3CH2CH2COOCH3 E) CH3CH2CH2COOH 93) What class of amine is found in the analgesic codeine (shown below)? A) tertiary amine B).
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91) Which is the most plausible and consistent combination of hybrid orbital notation and magnetic/geometric description of [CoF6]3-? A) sp2d/diamagnetic/square planar B) sp2d/paramagnetic/square planar C) sp3d2/diamagnetic/octahedral D) sp3d2/paramagnetic/octahedral E) sp2d/paramagnetic/tetrahedral 92)  [Cu(H2O)4]2+ absorbs light in the yellow part of the visible spectrum, thereby appearing to have the color ________. A) blue B) cyan C) green.
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41) Can 1,3,5-hexatriene be considered an aromatic compound? Why do you think so? A) Yes, because it contains alternating double and single bonds. B) No, because the molecule is not a flat ring. C) Yes, because its double bonds contain 4n+2 electrons (n = 1). D) No, because the structure is not based on.
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81) What is the main product of the following reaction? A) 1-bromopropane B) 2-bromopropane C) propyl alcohol D) 2-bromopropene E) 1-bromo-2-methylethane 82) Suggest reagents for the synthesis of meta-chloronitrobenzene from nitrobenzene. A) Cl2 and AlCl3 B) HCl and AlCl3 C) Cl2 and H2SO4 D) HCl and HNO3 E) Cl2 and FeBr3 83) Which of the following groups.
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11) For which type of reaction is the following an example? A) substitution B) elimination C) polymerization D) rearrangement E) addition 12) Which of the following trends in nucleophilicity are correct? I) Everything else being equal, a negatively charged nucleophile will react faster than a neutral one. II) Generally, species containing elements of high electronegativity are good nucleophiles. III).
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61) The molecule on which an enzyme acts is commonly referred to as: A) reactant B) substrate C) hydrolate D) active site E) actor 62) Choose the INCORRECT statement about metabolism. A) Catabolism is when substances are broken down. B) Anabolism is the derivation of energy from substances. C) Metabolites are substances.
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51) Classify the following polymers as atactic, isotactic or syndiotactic: A) Polymer A is isotactic, polymer B is atactic and polymer C is syndiotactic B) Polymer A is atactic, polymer B is isotactic and polymer C is syndiotactic C) Polymers A and B are isotactic and polymer C is syndiotactic D) Polymer A is.
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