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51) Find the correct statement about cis-trans isomers. A) Cis-trans isomers are diastereomers and occur because the rotation around a C≡C bond is very restricted. B) Cis-trans isomers are enantiomers and occur because the rotation around a C=C bond is very restricted. C) Cis-trans isomers are diastereomers and occur because the rotation around.
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51) Which of the following nuclides are most likely to decay via beta decay? A) I-126 B) Al-24 C) N-13 D) Cs-137 E) Na-20 52) Which of the following nuclides are most likely to decay via positron emission? A) Cs-137 B) I-131 C) Al-24 D) K-42 E) N-14 53) Which of the following nuclides are most likely to decay via positron emission? A).
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21) Which of the following compounds is ethanol? A) C2H6 B) C2H5OH C) CH3CO2H D) CH3CO2CH3 E) CH3-O-CH3 22) Which of the following statements correctly describes organic halides? A) Organic halides have one or more H atoms substituted by an electronegative atom from group 16 of the periodic table. B) Organic halides have one or more C atoms.
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Short Answer Questions 1) Why are lipids well-suited as structural components of cell membranes? 2) Why does the melting point of fatty acids decrease with the number of double bonds present? 3) How do cis- and trans-fats differ? 4) What is the difference between an a-glycosidic linkage and a b-glycosidic linkage? What implication does.
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Matching Questions Match the following. A) Si2O52- B) SiO44- C) Si4O116- D) SiO32- E) Si2O76- 1) orthosilicate Diff: 2     Type: MA     Var: 1     Page Ref: 23.3 2) pyroxene Diff: 2     Type: MA     Var: 1     Page Ref: 23.3 3) pyrosilicate Diff: 2     Type: MA     Var: 1     Page Ref: 23.3 4) amphibole Diff: 2     Type: MA     Var: 1     Page Ref: 23.3 5) phyllosilicate Diff: 2     Type: MA     Var:.
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  Multiple Choice Questions 1) Which of the following is a general property of a metal? A) high resistivity B) good conductor of heat C) low boiling point D) low melting point E) high electronegativity 2) Identify the substances that are homogeneous, naturally occurring, crystalline inorganic solids. A) slag B) minerals C) ores D) gangue E) alloy 3) Which of the following describes gangue? A).
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71) Which combination of reagents is used in the Friedel-Crafts alkylation? A) alkyl chloride, R-Cl, and aluminum hydroxide, Al(OH)3 B) alkyl chloride, R-Cl, and aluminum fluoride, AlF3 C) alkyl chloride, R-Cl, and aluminum chloride, AlCl3 D) alkyl chloride, R-Cl, and aluminum oxide, Al2O3 E) acyl chloride, RC(=O)Cl, and aluminum chloride, AlCl3 72) Which combination of reagents.
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Algorithmic Questions 1) Which one of the following amino acids does not contain a basic side chain? A) arginine B) histidine C) lysine D) threonine 2) Which one of the following amino acids contains a polar side chain? A) alanine B) glycine C) threonine D) valine 3) Which one of the following amino acids contains a hydrophobic side chain? A) valine B) histidine C).
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Matching Questions Match the following. A) substitution at saturated carbon atom, mechanism B) LiAlH4 C) H+ D) step-growth E) elimination reaction mechanism F) Jones reagent G) hemiketal H) methoxide I) CN- 1) electrophile Diff: 1     Type: MA     Var: 1     Page Ref: 21.4; 21.5 2) nucleophile Diff: 1    Type: MA    Var: 1    Page Ref: 21.4; 21.6 3) SN1 Diff: 1    Type: MA    Var: 1    Page Ref: 21.4 4).
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61) What are the correct products of the following reaction performed in the presence of an acid? C3H7COOCH3 + C2H5OH → A) C3H7COOC2H5 + CH3OH B) CH3COOC2H5 + C3H7OH C) C3H7COC2H5 + CH3COOH D) C3H7OH + C2H5COOCH3 + H3O+ E) C3H7CH(OCH3)(OC2H5) + H2O 62) Identify reagents A and B required for the following transformation of acyl groups: C2H5COOH.
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21) Choose the polysaccharide from the compounds below. A) B) C) D) E) 22) How many of the carbons in the following structure are chiral? A) 3 B) 0 C) 2 D) 1 E) 4 or more 23) Which of the following statements is TRUE? A) Monosaccharides are the building blocks of polypeptides. B) Nucleotides are the building blocks.
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  Multiple Choice Questions 1) What type of lipid is the following compound? A) steroid B) phospholipid C) glycolipid D) fatty acid E) triglyceride 2) What type of lipid is the following compound? A) steroid B) phospholipid C) glycolipid D) fatty acid E) triglyceride 3) What type of lipid is the following compound? A) steroid B) phospholipid C) glycolipid D) fatty acid E) triglyceride 4) What type of lipid is.
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  Multiple Choice Questions 1) What is the maximum number of covalent bonds that a carbon atom can form? A) 1 B) 2 C) 3 D) 4 E) 5 2) Identify the generic formula for alkanes. A) CnH2n+2 B) CnH2n-2 C) CnH2n D) CnH2n-4 E) CnH2n+4 3) Identify the generic formula for alkenes. A) CnH2n+2 B) CnH2n-2 C) CnH2n D) CnH2n-4 E) CnH2n+4 4) Which of the following acyclic compounds.
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61) Which of the following compounds exhibits optical isomerism? A) CH3-CH2-CH3 B) CH3-CH2-CHBr-CH3 C) CH3-CHCl-CH3 D) CH3-CH2-CH2Br E) CH3-CH2-CBr2-CH3 62) How many of the carbons in the following compound are chiral centre(s)? A) 0 B) 1 C) 2 D) 3 E) 4 or more 63) How many of the carbons in the following compound are chiral centre(s)? A) 0 B) 1 C) 2 D) 3 E) 4.
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41) Which of the following is the balanced chemical equation for the addition of two equivalents of Br2 to CH3C≡CH? A) CH3C≡CH + 2Br2 → CH3CBr2CHBr2 B) CH3C≡CH + 2Br2 → CH3CBr=CHBr C) CH3C≡CH + 2Br2 → CH3CH2CHBr2 D) CH3C≡CH + 2Br2 → CH3CBr2CH3 E) CH3C≡CH + 2Br2 → CH3CHBrCH2Br 42) Complete and balance the following.
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81) Which of the following is TRUE regarding index of hydrogen deficiency (IHD)? A) When calculating IHD, oxygen does not change the number of H atoms in the parent formula, halogens are considered equal to hydrogen, and nitrogen requires one additional hydrogen atom in the parent formula. B) When calculating IHD, oxygen.
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71) Determine the absolute configuration of the molecule shown below: A) S configuration B) R configuration C) E configuration D) Z configuration E) d configuration 72) Determine the absolute configuration of the molecule shown below: A) S configuration B) R configuration C) E configuration D) Z configuration E) l configuration 73) Determine the absolute configuration of the molecule shown below: A) S configuration B).
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  Multiple Choice Questions 1) In which of the following families would the strongest organic bases be found? A) amines B) ethers C) esters D) alcohols E) ketones 2) In which of the following families would the strongest organic acids be found? A) ethers B) alcohols C) amines D) esters E) alkanes 3) Choose the weak base from the compounds below. A) (CH3)2NH B) CH3CO2H C) CH3COCH3 D).
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  Multiple Choice Questions 1) Identify the radioactive green light that glows in the dark. A) phenolphthalein B) radioactivity C) phosphorescence D) desensitivity E) neon 2) Which of the following statements is TRUE? A) Positrons are similar in ionizing power and penetrating power to alpha particles. B) A positron is the antiparticle of the protons. C) Alpha particles are the heaviest.
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31) Determine the oxidation state of phosphorus in P2O74?. A) +5 B) +4 C) +3 D) +7 E) +2 32) Which of the following statements is TRUE? A) Ammonium nitrate is insoluble in water. B) Sodium nitrite is used in the glass industry. C) NO2 reacts with water to form ammonia. D) Hydrazine is a good reducing agent. E) Nitric acid.
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41) Which of the following is a constitutional isomer of the following organic molecule? A) B) C) D) E) 42) Which of the following structures are constitutional isomers of a compound with molecular formula C4H9N? A) B) C) D) E) 43) Which of the following pairs are constitutional isomers? A) CH3CH=CHCH2OH and CH3CH=CHOCH3 B).
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31) Which of the following alcohols has the lowest solubility in water? A) CH3CH2OH B) CH3CH2CH2CH2OH C) CH3CH2CH2CH2CH2OH D) CH3CH2CH2CH2CH2CH2OH E) CH3CH2CH2CH2CH2CH2CH2CH2OH 32) Which of the following organic families contains nonpolar compounds? A) carboxylic acids B) alcohols C) amines D) esters E) ethers 33) Which of the following is a primary alcohol? A) CH3CH2OH B) (CH3)2CHOH C) (CH3)3COH D) (CH3)2CHCH(CH3)OH E) CH3OCH3 34) Which one of the following.
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Short Answer Questions 1) Why are phosphate compounds added to detergents? 2) Why are the chemical properties of nitrogen and phosphorus so different when they are in the same family? 3) Describe the major production method for obtaining oxygen. 4) Draw the Lewis structure for IF4? and determine the geometry of the ion. 5) Write.
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11) Which of the following form between glycerol and fatty acids to form triglycerides? A) hydrogen bonds B) disulfide linkages C) peptide bonds D) glycosidic linkages E) ester linkages 12) Which of the following is an example of an aldopentose? A) B) C) D) E) 13) Which of the following is an example of a ketopentose? A) B).
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21) Give the product of the oxidation of the following compound: A) CH3CH2CHO B) CH3CH2CH2OH C) CH3CH2CH3 D) CH3CH2COOH E) CH3CH2OCH3 22) Which of the following statements is TRUE? A) In nucleophilic substitution reactions at a saturated carbon atom, a carbon with a positive charge behaves as a nucleophile. B) Nucleophilic substitution reactions at a saturated carbon atom.
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Short Answer Questions 1) Define radioactivity. 2) Why is an alpha emitter much more harmful if it is ingested than when applied to the skin? 3) Describe what is meant by the "valley of stability." 4) Explain the concept of "magic numbers." 5) How does a dosimeter measure exposure to radioactivity? .
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11) Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What percentage of a sample remains after 60.0 min? A) 71.2 B) 5.28 C) 13.0 D) 34.0 E) 2.94 12) A rock contains 0.313 mg of lead-206 for each milligram of uranium-238. The half-life for the decay of uranium-238 to lead-206.
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11) Identify the most oxidized compound. A) CH3CH2COOH B) CH3CH2CHO C) CH3CH2CH3 D) CH3CH2OCH3 E) CH3CH2CH2OH 12) Find the suitable reagent for the transformation: A) CrO3, H3O+ B) pyridinium chlorochromate (PCC) C) K2Cr2O7, H2SO4 D) KMnO4, H2SO4 E) K2Cr2O7, HNO3 13) Find the suitable reagent for the transformation: A) CrO3, H3O+ B) pyridinium chlorochromate (PCC) C) K2Cr2O7, H2SO4 D) KMnO4, H2SO4 E) K2Cr2O7, HNO3 14) What are primary.
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31) Which of the following is an example of a secondary protein structure? A) amino acid B) fatty acid C) lipid D) ?-pleated sheet E) dipeptide 32) Which of the following has a tertiary protein structure? A) amino acid B) fibrous protein C) nucleotide D) fatty acid E) globular protein 33) Which of the following is a type of nucleic acid? A) RNA B).
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6) What does the term "racemic mixture" mean? 7) What is meant by the term, "structural isomer"? Draw a structural isomer of CH3-CH2-CH2-CH3. 8) Explain the formation of triple bonds in alkynes. Make sure to mention the hybridization of carbon atoms. 9) What is the index of hydrogen deficiency? 10) What is the difference.
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11) Which of the following statements is TRUE? A) Organic halides are polar molecules with C-X bond polarity increasing in order C-I < C-Br < C-Cl < C-F. B) Alkenes are hydrocarbons that contain one or more C=C bonds and therefore must have some carbons sp hybridized. C) Amines are organic compounds that.
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Algorithmic Questions 1) Which compound is a saturated hydrocarbon? A) 1-butyne B) cycloheptene C) 3-methylheptane D) 2-heptyne 2) How many isomers are there for C5H12 ? A) 3 B) 4 C) 5 D) 6 3) Which one of the following molecules is the most polar? A) butane B) butanoic acid C) cyclohexane D) ethanol Matching Questions Match the following. A) amine B) ester C) aldehyde D) carboxylic acid E).
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  Multiple Choice Questions 1) Which of the following are major components of Earth's crust? A) oxygen and silicon B) calcium and silicon C) oxygen and iron D) oxygen, hydrogen, and carbon E) oxygen, iron, and carbon 2) Identify the formula of the compound that is in common glass. A) SiO2 B) Si2O3 C) SiO3 D) Si2O2 E) SiO4 3) Which of the following.
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Short Answer Questions 1) Draw a clear mechanism for SN1 substitution reactions. Make sure to indicate each step of the mechanism (if there is more than one) as well as to use arrows to show the electron flow. 2) Draw a clear mechanism for SN2 substitution reactions. Make sure to indicate each.
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Short Answer Questions 1) What is the difference between a voltaic cell and an electrolytic cell? 2) Sketch a voltaic cell that contains the following half reactions and label all relevant components. Zn2+(aq) + 2e? → Zn(s)E°= -0.76 V Cu2+(aq) + 2e? → Cu(s)E°= +0.34 V 3) Give an example of an inert electrode. 4) Explain.
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Matching Questions Match the following. A) e B) He C) e D) ? E) p F) n 1) positron Diff: 1     Type: MA     Var: 1     Page Ref: 19.3 2) gamma ray Diff: 1     Type: MA     Var: 1     Page Ref: 19.3 3) alpha particle Diff: 1     Type: MA     Var: 1     Page Ref: 19.3 4) beta particle Diff: 1     Type: MA     Var: 1     Page Ref: 19.3 5) proton Diff:.
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31) Which of the following statements is TRUE? A) Elimination reactions proceed via either an E1 mechanism, which is a one-step mechanism, or an E2 mechanism, which is a two-step mechanism. B) The E1 mechanism is somewhat similar to the SN1 mechanism: they both start with a dissociation step in which a.
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