Organic Chemistry Prelim

Carbon can meet this four-bond requirement in three different ways, EXCEPT

• By bonding to four other atoms

• By bonding single atoms

• By bonding to three other atoms

• By bonding to two other atoms

Carbon atoms in organic compounds, in accordance with the octet rule, always form

• one covalent bonds

• two covalent bonds

• three covalent bonds

• four covalent bonds

Which of the following contains only carbon

atoms and hydrogen atoms?

• Fluorine

• Bromine

• Hydrocarbon

• Oxygen

Which of the following contains carbon and hydrogen and one or more additional elements?

• unsaturated hydrocarbon

• saturated hydrocarbon

• hydrocarbon

• hydrocarbon derivative

Acyclic carbon atom belongs to which hydrocarbon?

• saturated hydrocarbon

• unsaturated hydrocarbon

• hydrocarbon derivatives

• derivatives

Which of the following hydrocarbon that contains only carbon–carbon single bonds?

• Alkyne

• Alkene

• Alkane

• Alkyl

Which of the following is the three simplest alkanes, EXCEPT

• ethane

• methane

• propane

• butane

Which of the following isomers has the highest density?

• pentane

• Isopentane

• Neopentane

• none of the above

Determine whether the members of each of the following pairs of structural formulas represent

(1) different conformations of the same molecule, (2) different compounds that are constitutional isomers, or (3) different compounds that are not constitutional isomers.

• Constitutional isomers

• Different conformations

• different compounds

• different elements

Determine whether the members of each of the following pairs of structural formulas represent

(1) different conformations of the same molecule, (2) different compounds that are constitutional isomers, or (3) different compounds that are not constitutional isomers.

• Constitutional isomers

• Constitutional compound

• Different conformations

• different compounds