Answer: Propane and cyclopropane.
- A Propane and cyclopropane
- B Butane and isobutane
- C Ethanol and dimethyl ether
- D Pentane and neopentane
Correct answer: A. Propane and cyclopropane
Explanation: Propane and cyclopropane have the same molecular formula but differ as open chain and cyclic structures.
Geometric (cis-trans) isomers of 1,2-dichloroethene differ only in the relative arrangement of groups across the rigid C=C double bond.
Concept context
General Organic Chemistry covers the rules behind all organic reactions. Covers inductive effect, resonance, hyperconjugation, types of reactions (substitution, addition, elimination), and isomerism including optical and geometric forms.
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