Question 2 from CJC (26 July)

What structural feature allows compound A to exhibit cis-trans isomerism?

• Compound A contains a C≡C bond.
• Compound A contains only single bonds.
• Compound A contains a C=C bond.
• Compound A contains a cycloalkane ring.

What structural feature allows compound A to exhibit enantiomerism?

• Compound A has a plane of internal symmetry.
• Compound A has multiple chiral centers making it achiral.
• Compound A has no chiral carbon.
• Compound A has only a chiral carbon.

What type of reaction does compound A undergo with acidified potassium manganate(VII)?

• Compound A undergoes elimination.
• Compound A undergoes reduction.
• Compound A undergoes substitution.
• Compound A undergoes oxidative cleavage of the C=C bond.

What happens to the carbon atoms of compound A during the reaction with acidified potassium manganate(VII)?

• One carbon atom is lost as carbon monoxide.
• Two carbon atoms are lost in the form of carbon dioxide.
• No carbon atoms are lost.
• Four carbon atoms are lost in the form of methane.

What type of reaction does compound B undergo when warmed with an alkaline solution of iodine?

• Compound B undergoes oxidation.
• Compound B undergoes reduction.
• Compound B undergoes elimination.
• Compound B undergoes substitution.

What structural feature does compound B contain that allows this reaction to occur?

• Compound B contains two –CH3 groups.
• Compound B contains two –COCH3 groups.
• Compound B contains two –NH2 groups.
• Compound B contains two –OH groups.

What structural feature does compound C contain?

• Compound C contains two aldehyde groups.
• Compound C contains two hydroxyl groups.
• Compound C contains two amine groups.
• Compound C contains two carboxylate anions.

What structural feature does compound E contain?

• Compound E contains two CH3 groups.
• Compound E contains two CO2H functional groups.
• Compound E contains two OH groups.
• Compound E contains two NH2 groups.

What type of reaction does compound E undergo with ethane-1,2-diol?

• Compound E undergoes oxidation.
• Compound E undergoes condensation.
• Compound E undergoes hydrolysis.
• Compound E undergoes reduction.