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Which butanol isomer has the lowest boiling point

The same question, asked 4 times: 9 May 2023 S2, 20 Apr 2025 S2, 18 Apr 2026 S1, 18 Apr 2026 S2. Every wording below, oldest first.

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  1. Question 1

    9 May 2023 S2

    76
    Which isomer of C4_4H9_9OH has lower boiling point?

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  2. Question 2

    20 Apr 2025 S2

    74
    Which among the following compounds has lowest boiling point?

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  3. Question 3

    18 Apr 2026 S1

    37
    Which among the following has lowest boiling point?

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  4. Question 4

    18 Apr 2026 S2

    39
    Which of the following isomers of C4H9OH\mathrm{C_4H_9OH} has lowest boiling point ?

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