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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 |
| | B) | 5,6-dimethyl-8-ethyldecane |
| | C) | 3-ethyl-5,6-dimethyldecane |
| | D) | 1,1-diethyl-3,4-dimethyloctane |
| | 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 |
| | B) | 1 and 3 |
| | C) | 2, 3 and 5 |
| | D) | 1,2 and 4 |
| | E) | 1, 3 and 5 |
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| 3 | |
Which of the following is a constitutional isomer of CH3CH2COOH that exhibits optical isomerism? |
| | A) | CH3CH(OH)COCH3 |
| | B) | CH3COOCH3 |
| | C) | CH3COCH2OH |
| | 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 |
| | B) | 3,5-cyclohexadiene |
| | C) | 1,3-dicyclohexene |
| | D) | 1,3-cyclohexadiene |
| | E) | 3,5-cyclopentadiene |
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| 5 | |
Which of the following is likely to be an aromatic compound? |
| | A) | C6H5Cl |
| | 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? |
| | A) | ethers |
| | B) | carboxylic acids |
| | C) | esters |
| | D) | ketones |
| | E) | aldehydes |
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| 8 | |
Which type of organic compound does not contain a carbonyl group? |
| | A) | carboxylic acids |
| | B) | ethers |
| | C) | ketones |
| | D) | aldehydes |
| | E) | esters |
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| 9 | |
Organic compounds with the general formula HCOOR (where R is a hydrocarbon group) are called: |
| | A) | ketones |
| | B) | acids |
| | C) | ethers |
| | D) | esters |
| | E) | aldehydes |
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| 10 | |
The segment -CH2CH=CHCH2CH2CH=CHCH2- represents the polymer named |
| | A) | polypropylene |
| | B) | polybutadiene |
| | C) | polystyrene |
| | D) | polybutylene |
| | E) | polyisoprene |
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| 11 | |
What class of polymers are formed along with small molecules (e.g., water) when monomer units link? |
| | A) | condensation |
| | B) | addition |
| | C) | elimination |
| | D) | substitution |
| | 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: |
| | A) | 90 kJ/mol |
| | B) | -90 kJ/mol |
| | C) | -692 kJ/mol |
| | D) | -256 kJ/mol |
| | E) | none of the above. |
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| 13 | |
What interactions are primarily responsible for stabilizing the helical structure of certain proteins? |
| | A) | hydrogen-bonding |
| | B) | dispersion forces |
| | C) | covalent bonds |
| | D) | ionic interactions |
| | E) | steric interactions |
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| 14 | |
What two atoms are linked in a peptide bond? |
| | A) | C-O |
| | B) | N-O |
| | C) | S-C |
| | D) | C-N |
| | 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? |
| | A) | The DNA base sequence determines the RNA base sequence which, in turn, determines the protein amino acid sequence. |
| | B) | The RNA base sequence determines the protein amino acid sequence which, in turn, determines the DNA base sequence. |
| | C) | The DNA base sequence determines the protein amino acid sequence which, in turn determines the RNA base sequence. |
| | D) | The protein amino acid sequence determines the RNA base sequence which, in turn, determines the DNA base sequence. |
| | E) | The RNA base sequence determines the DNA base sequence which, in turn, determines the protein amino acid sequence. |
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