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Which of the following Newman projections shows an antistaggered conformation of n-pentane?


A)
Which of the following Newman projections shows an antistaggered conformation of n-pentane? A) B) C) D) E)
B)
Which of the following Newman projections shows an antistaggered conformation of n-pentane? A) B) C) D) E)
C)
Which of the following Newman projections shows an antistaggered conformation of n-pentane? A) B) C) D) E)
D)
Which of the following Newman projections shows an antistaggered conformation of n-pentane? A) B) C) D) E)
E)
Which of the following Newman projections shows an antistaggered conformation of n-pentane? A) B) C) D) E)

F) A) and B)
G) C) and D)

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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 requires one additional hydrogen atom in the parent formula,halogens are considered equal to hydrogen,and nitrogen does not change the number of H atoms in the parent formula.
C) When calculating IHD,oxygen is treated like hydrogen,halogens require one additional hydrogen atom in the parent formula,and nitrogen does not change the number of H atoms in the parent formula.
D) 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 two additional hydrogen atoms in the parent formula.
E) When calculating IHD,oxygen and halogens do not change the number of H atoms in the parent formula,and nitrogen requires two additional hydrogen atoms in the parent formula.

F) A) and B)
G) C) and E)

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Which of the following functional groups is found in amines?


A) -Cā‰”N
B) -NO2
C) -NH2
D) -Nā‰”N
E) -N=NH

F) C) and D)
G) A) and B)

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Which of the following is a primary alcohol?


A) CH3CH2OH
B) (CH3) 2CHOH
C) (CH3) 3COH
D) (CH3) 2CHCH(CH3) OH
E) CH3OCH3

F) All of the above
G) C) and E)

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What are constitutional isomers?

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Constitutional isome...

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Which of the following organic families contains nonpolar compounds?


A) carboxylic acids
B) alcohols
C) amines
D) esters
E) ethers

F) A) and B)
G) B) and E)

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Explain the formation of triple bonds in alkynes.Make sure to mention the hybridization of carbon atoms.

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The C-C triple bond is made of one Ļƒ and...

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Which of the following pairs of organic compound families could have constitutional isomers?


A) an ether and an alcohol
B) an amide and an amine
C) an ether and a carboxylic acid
D) a carboxylic acid and an amide
E) an amine and an alcohol

F) C) and D)
G) A) and B)

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A

Which of the following statements is TRUE?


A) Infrared absorption spectroscopy is a common method for identifying functional groups in the structure of organic molecules.
B) Infrared absorption spectroscopy is a technique that makes use of the fact that infrared photons can excite the valence electrons in organic molecules.
C) Infrared absorption spectroscopy is a simple yet powerful method for determining the absolute configuration of chiral organic molecules.
D) Infrared absorption spectroscopy observes the energy emitted by vibrating bonds in molecules.
E) Infrared absorption spectroscopy is a technique frequently used in separation of isomers.

F) A) and B)
G) B) and E)

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What is meant by the term,"structural isomer"?

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Structural isomers are compoun...

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Which of the following compounds contain an acyl group?


A) esters,ethers,carboxylic acids
B) esters,carboxylic acids,amines
C) esters,carboxylic acids,amides
D) esters,alcohols,amines
E) ethers,amides,esters

F) C) and D)
G) B) and E)

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Which of the following is a constitutional isomer of the following organic molecule? Which of the following is a constitutional isomer of the following organic molecule? A) B) C) D) E)


A)
Which of the following is a constitutional isomer of the following organic molecule? A) B) C) D) E)
B)
Which of the following is a constitutional isomer of the following organic molecule? A) B) C) D) E)
C)
Which of the following is a constitutional isomer of the following organic molecule? A) B) C) D) E)
D)
Which of the following is a constitutional isomer of the following organic molecule? A) B) C) D) E)
E)
Which of the following is a constitutional isomer of the following organic molecule? A) B) C) D) E)

F) A) and B)
G) A) and D)

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Which of the following structures is R-but-3-en-2-ol?


A)
Which of the following structures is R-but-3-en-2-ol? A) B) C) D) E)
B)
Which of the following structures is R-but-3-en-2-ol? A) B) C) D) E)
C)
Which of the following structures is R-but-3-en-2-ol? A) B) C) D) E)
D)
Which of the following structures is R-but-3-en-2-ol? A) B) C) D) E)
E)
Which of the following structures is R-but-3-en-2-ol? A) B) C) D) E)

F) A) and C)
G) None of the above

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Which one of the following structures belongs to the amide family?


A)
Which one of the following structures belongs to the amide family? A) B) C) D) E)
B)
Which one of the following structures belongs to the amide family? A) B) C) D) E)
C)
Which one of the following structures belongs to the amide family? A) B) C) D) E)
D)
Which one of the following structures belongs to the amide family? A) B) C) D) E)
E)
Which one of the following structures belongs to the amide family? A) B) C) D) E)

F) All of the above
G) B) and C)

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A

Which of the following compounds is an ester?


A)
Which of the following compounds is an ester? A) B) C) D) E)
B)
Which of the following compounds is an ester? A) B) C) D) E)
C)
Which of the following compounds is an ester? A) B) C) D) E)
D)
Which of the following compounds is an ester? A) B) C) D) E)
E)
Which of the following compounds is an ester? A) B) C) D) E)

F) B) and C)
G) D) and E)

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Which of the following acyclic compounds is an alkene with one double bond in its structure?


A) C10H22
B) C11H22
C) C12H22
D) C6H10
E) C5H8

F) C) and D)
G) A) and E)

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The infrared spectrum of a compound with molecular formula C4H8O has weak peaks around 1650 cm-1 and a very broad,medium intensity peak around 3350 cm-1.What is the most likely structure of this compound?


A)
The infrared spectrum of a compound with molecular formula C<sub>4</sub>H<sub>8</sub>O has weak peaks around 1650 cm<sup>-1</sup> and a very broad,medium intensity peak around 3350 cm<sup>-1</sup>.What is the most likely structure of this compound? A) B) C) D) E)
B)
The infrared spectrum of a compound with molecular formula C<sub>4</sub>H<sub>8</sub>O has weak peaks around 1650 cm<sup>-1</sup> and a very broad,medium intensity peak around 3350 cm<sup>-1</sup>.What is the most likely structure of this compound? A) B) C) D) E)
C)
The infrared spectrum of a compound with molecular formula C<sub>4</sub>H<sub>8</sub>O has weak peaks around 1650 cm<sup>-1</sup> and a very broad,medium intensity peak around 3350 cm<sup>-1</sup>.What is the most likely structure of this compound? A) B) C) D) E)
D)
The infrared spectrum of a compound with molecular formula C<sub>4</sub>H<sub>8</sub>O has weak peaks around 1650 cm<sup>-1</sup> and a very broad,medium intensity peak around 3350 cm<sup>-1</sup>.What is the most likely structure of this compound? A) B) C) D) E)
E)
The infrared spectrum of a compound with molecular formula C<sub>4</sub>H<sub>8</sub>O has weak peaks around 1650 cm<sup>-1</sup> and a very broad,medium intensity peak around 3350 cm<sup>-1</sup>.What is the most likely structure of this compound? A) B) C) D) E)

F) A) and B)
G) D) and E)

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Which of the following compounds is a ketone?


A) CH3CH2CH2CO2H
B)
Which of the following compounds is a ketone? A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CO<sub>2</sub>H B) C) CH<sub>3</sub>CH<sub>2</sub>NH<sub>2</sub> D) E)
C) CH3CH2NH2
D)
Which of the following compounds is a ketone? A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CO<sub>2</sub>H B) C) CH<sub>3</sub>CH<sub>2</sub>NH<sub>2</sub> D) E)
E)
Which of the following compounds is a ketone? A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CO<sub>2</sub>H B) C) CH<sub>3</sub>CH<sub>2</sub>NH<sub>2</sub> D) E)

F) A) and B)
G) A) and C)

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In which of the following structures have the group priorities been assigned correctly?


A)
In which of the following structures have the group priorities been assigned correctly? A) B) C) D) E)
B)
In which of the following structures have the group priorities been assigned correctly? A) B) C) D) E)
C)
In which of the following structures have the group priorities been assigned correctly? A) B) C) D) E)
D)
In which of the following structures have the group priorities been assigned correctly? A) B) C) D) E)
E)
In which of the following structures have the group priorities been assigned correctly? A) B) C) D) E)

F) B) and E)
G) C) and E)

Correct Answer

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Which one of the following molecules is the most polar?


A) butane
B) butanoic acid
C) cyclohexane
D) ethanol

E) All of the above
F) A) and B)

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B

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