MDCAT Chemistry MCQ #3989

Comparing 1-butene and 2-butene, why is geometric isomerism possible in one but not the other according to PTB criteria?

MDCAT Chemistry MCQ #3989

  1. Question 1

    Q1. Comparing 1-butene and 2-butene, why is geometric isomerism possible in one but not the other according to PTB criteria?

    • A) 1-Butene and 2-butene both show geometric isomerism
    • B) 2-Butene shows geometric isomerism but 1-butene does not
    • C) 1-Butene shows geometric isomerism but 2-butene does not
    • D) Neither 1-butene nor 2-butene can show geometric isomerism

    Answer: 2-Butene shows geometric isomerism but 1-butene does not

    Explanation: 1-Butene does not show cis-trans isomerism because one of the double-bonded carbons has two identical hydrogen atoms.