Optical isomerism and chirality Quiz
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5 questions, one answer each
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1. Which compound has a chiral centre?
- A. Propan-2-ol
- B. Butan-2-ol
- C. 2-Methylpropan-2-ol
- D. Ethanol
2. Enantiomers are best described as:
- A. Isomers with different structural formulae
- B. Isomers that differ in the position of a double bond
- C. Non-superimposable mirror images
- D. Identical molecules drawn differently
3. A solution contains equal amounts of two enantiomers. What would a polarimeter show?
- A. Clockwise rotation
- B. Anticlockwise rotation
- C. Double the rotation of one enantiomer
- D. No rotation
4. Which statement about a pair of enantiomers is correct?
- A. They rotate plane-polarised light in opposite directions by equal angles
- B. They have different structural formulae
- C. They rotate light in the same direction
- D. They are always a racemic mixture
5. How many chiral centres does a molecule of butan-2-ol contain?
- A. None
- B. One
- C. Two
- D. Three