Geometric Isomerism Quiz

What is stereoisomerism?

• Molecules with different atomic arrangement

• Molecules with the same spatial arrangement

• Molecules with different molecular formulas

• Molecules with the same molecular formula but different spatial arrangement

What is the difference between structural isomerism and stereoisomerism?

• Structural isomerism involves different atomic arrangement, while stereoisomerism involves different spatial arrangement

• Structural isomerism involves different spatial arrangement, while stereoisomerism involves different atomic arrangement

• Structural isomerism involves different molecular formulas, while stereoisomerism involves different spatial arrangement

• Structural isomerism involves different spatial arrangement, while stereoisomerism involves different molecular formulas

How do geometric isomers arise?

• Due to restricted rotation in a molecule, such as a carbon-carbon single bond

• Due to unrestricted rotation in a molecule, such as a carbon-carbon single bond

• Due to unrestricted rotation in a molecule, such as a carbon-carbon double bond

• Due to restricted rotation in a molecule, such as a carbon-carbon double bond

What is the E-Z system better for naming?

• Cyclic compounds

• Simple molecules

• Unsaturated compounds

• More complicated structures

In which case do you have geometric isomers?

• Two same groups on the left-hand end of the bond and two same groups on the right-hand end

• Two same groups on the left-hand end of the bond and two different groups on the right-hand end

• Two different groups on the left-hand end of the bond and two different groups on the right-hand end

• Two different groups on the left-hand end of the bond and two same groups on the right-hand end

What is the shape around each carbon atom in cyclohexane?

• Linear

• Tetrahedral

• Octahedral

• Trigonal planar

What happens if you have a ring of carbon atoms in terms of rotation?

• There is unrestricted rotation about any of the carbon-carbon bonds

• There is restricted rotation about any of the carbon-carbon bonds

• There is restricted rotation about the carbon-carbon double bond

• There is no possibility of rotation about any of the carbon-carbon bonds

What is the effect of geometric isomerism on the melting and boiling points of the cis and trans isomers of 1,2-dichloroethene?

• The melting and boiling points are not affected by geometric isomerism

• The cis isomer has a higher melting and boiling point than the trans isomer

• The trans isomer has a higher melting and boiling point than the cis isomer

• Both isomers have the same melting and boiling point

How to recognize the possibility of geometric isomerism?

• Compounds containing a carbon-carbon single bond have restricted rotation

• Compounds containing a carbon-carbon double bond have unrestricted rotation

• Compounds containing a carbon-carbon double bond have restricted rotation

• Compounds containing a carbon-carbon single bond have unrestricted rotation

What is the most likely example of geometric isomerism at an introductory level?

• 1,2-dichloroethene

• 1,2-dichloroethane

• Cyclohexane

• But-2-ene