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1 | |
What is the correct name of the compound shown below?
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| | A) | 3-ethyl-4,5-dimethylnonane
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| | B) | 5,6-dimethyl-8-ethyldecane
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| | C) | 3-ethyl-5,6-dimethyldecane
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| | D) | 1,1-diethyl-3,4-dimethyloctane
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| | E) | 1-isopropyl-2,4-dimethylheptane
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2 | |
Which of the following are constitutional isomers?
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| | A) | 1 and 2
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| | B) | 1 and 3
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| | C) | 2, 3 and 5
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| | D) | 1,2 and 4
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| | E) | 1, 3 and 5
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3 | |
Which of the following is a constitutional isomer of CH3CH2COOH that exhibits optical isomerism?
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| | A) | CH3CH(OH)COCH3 |
| | B) | CH3COOCH3 |
| | C) | CH3COCH2OH
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| | D) | HOCH=CHOCH3 |
| | E) | CH3CH(OH)CHO
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4 | |
What is the IUPAC name of the following compound?
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| | A) | 1,3-cycloheptadiene
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| | B) | 3,5-cyclohexadiene
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| | C) | 1,3-dicyclohexene
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| | D) | 1,3-cyclohexadiene
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| | E) | 3,5-cyclopentadiene
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5 | |
Which of the following is likely to be an aromatic compound?
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| | A) | C6H5Cl
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| | B) | C6H12 |
| | C) | C2H4Cl2 |
| | D) | C2H2 |
| | E) | C4H8 |
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6 | |
Which of the formulas in the answers represents the alcohol parent of the ester below?
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| | A) | CH3 - CH2 - CH2 - OH |
| | B) | CH3 - CH2 - OH |
| | C) | CH3 - COOH |
| | D) | CH3 - CH2 - COOH |
| | E) | none of the above |
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7 | |
Which type of organic compound contains a hydroxyl group?
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| | A) | ethers
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| | B) | carboxylic acids
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| | C) | esters
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| | D) | ketones
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| | E) | aldehydes
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8 | |
Which type of organic compound does not contain a carbonyl group?
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| | A) | carboxylic acids
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| | B) | ethers
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| | C) | ketones
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| | D) | aldehydes
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| | E) | esters
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9 | |
Organic compounds with the general formula HCOOR (where R is a hydrocarbon group) are called:
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| | A) | ketones
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| | B) | acids
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| | C) | ethers
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| | D) | esters
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| | E) | aldehydes
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10 | |
The segment -CH2CH=CHCH2CH2CH=CHCH2- represents the polymer named
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| | A) | polypropylene
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| | B) | polybutadiene
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| | C) | polystyrene
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| | D) | polybutylene
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| | E) | polyisoprene
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11 | |
What class of polymers are formed along with small molecules (e.g., water) when monomer units link?
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| | A) | condensation
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| | B) | addition
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| | C) | elimination
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| | D) | substitution
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| | E) | copolymers
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12 | |
The C-C and C=C bond energies are 346 and 602 kJ/mol. The enthalpy of polymerization of an alkene should be about:
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| | A) | 90 kJ/mol
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| | B) | -90 kJ/mol
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| | C) | -692 kJ/mol
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| | D) | -256 kJ/mol
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| | E) | none of the above.
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13 | |
What interactions are primarily responsible for stabilizing the helical structure of certain proteins?
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| | A) | hydrogen-bonding
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| | B) | dispersion forces
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| | C) | covalent bonds
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| | D) | ionic interactions
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| | E) | steric interactions
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14 | |
What two atoms are linked in a peptide bond?
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| | A) | C-O
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| | B) | N-O
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| | C) | S-C
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| | D) | C-N
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| | E) | C-C
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15 | |
Which of the following arrangements is correct for the interrelation of the protein amino acid sequence, the RNA base sequence, and the DNA base sequence?
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| | A) | The DNA base sequence determines the RNA base sequence which, in turn, determines the protein amino acid sequence.
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| | B) | The RNA base sequence determines the protein amino acid sequence which, in turn, determines the DNA base sequence.
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| | C) | The DNA base sequence determines the protein amino acid sequence which, in turn determines the RNA base sequence.
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| | D) | The protein amino acid sequence determines the RNA base sequence which, in turn, determines the DNA base sequence.
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| | E) | The RNA base sequence determines the DNA base sequence which, in turn, determines the protein amino acid sequence.
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