Welcome to the Quiz!
This quiz contains 13 questions from a mix of 1 subtopics.
What are the two sub-types of stereoisomers?
geometric isomers and optical isomers
functional group isomers and stereoisomers
chain isomers and positional isomers
cis isomers and trans isomers
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What is the term for a carbon atom bonded to four different substituents, creating non-superimposable mirror image forms?
stereogenic centre
geometric centre
chiral centre
optical centre
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What is the name given to non-superimposable mirror image forms of a molecule?
meso compounds
diastereomers
enantiomers
racemates
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Which of the following molecules has a chiral centre?
2-chlorobutane
ethane
propane
pentane
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Which of the following statements about enantiomers is true?
they have different structural formulas
they have different melting points
they have different interactions with plane-polarised light
they have different molecular formulas
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What is the term for isomers that have the same structural formula but different arrangements of atoms in space?
geometric isomers
conformational isomers
structural isomers
optical isomers
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What is a chiral carbon?
a carbon atom with four different groups attached
a carbon atom with four identical groups attached
a carbon atom with three different groups attached
a carbon atom with two different groups attached
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How many optical isomers can a molecule with one chiral centre have?
3
2
4
1
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What is the difference between normal light and plane polarised light?
normal light is optically active, while plane polarised light is not
plane polarised light is optically active, while normal light is not
normal light vibrates in all directions, while plane polarised light vibrates in one direction
normal light vibrates in one direction, while plane polarised light vibrates in all directions
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What is the term for compounds that rotate plane polarised light?
optically polarised
optically neutral
optically active
optically inactive
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How do enantiomers affect plane polarised light?
both enantiomers rotate it anticlockwise by the same angle
one enantiomer rotates it clockwise, while the other rotates it anticlockwise by the same angle
one enantiomer rotates it clockwise, while the other does not affect it
both enantiomers rotate it clockwise by the same angle
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What is a racemic mixture?
a mixture containing unequal amounts of two enantiomers
an equimolar mixture containing equal amounts of two enantiomers
a mixture containing only one enantiomer
a mixture containing equal amounts of all possible enantiomers
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Why do racemic mixtures exhibit no net optical activity?
the enantiomers are not optically active
the opposing rotations of the enantiomers cancel out
the enantiomers rotate plane polarised light in the same direction
the enantiomers do not rotate plane polarised light
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