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Work out the alkene from its ozonolysis or oxidation products

This type of question, asked 6 times: 29 Jan 2023, 31 Jan 2023, 8 Apr 2023, 23 Jan 2025, 3 Apr 2025, 4 Apr 2026 S1. All 6 questions below, oldest first.

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  1. Question 1

    29 Jan 2023

    55
    17mg17mg of a hydrocarbon (M.F. C10H16C_{10}H_{16} ) takes up 8.40 mL8.40\text{ }mL of the H2H_{2} gas measured at 0∘C0^{\circ}C and 760 mm760\text{ }mm of HgHg. Ozonolysis of the same hydrocarbon yields the products shown (propanone, methanal and 2-oxopentanedial). The number of double bond/s present in the hydrocarbon is

  2. Question 2

    31 Jan 2023

    124
    A hydrocarbon ' XX ' with formula C6H8C_{6}H_{8} uses two moles H2H_{2} on catalytic hydrogenation of its one mole. On ozonolysis, ' XX ' yields two moles of methane dicarbaldehyde. The hydrocarbon ' XX ' is:

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  3. Question 3

    8 Apr 2023

    51
    Molar mass of the hydrocarbon (X) which on ozonolysis consumes one mole of O3O_{3} per mole of (X)(X) and gives one mole each of ethanal and propanone is ___gmol −1\_\_\_ gmol\ ^{- 1} (Molar mass of C : 12 g mol−1,H:1 g mol−112\text{ }g{\text{ }mol}^{- 1},H:1\text{ }g{\text{ }mol}^{- 1} )

  4. Question 4

    23 Jan 2025

    125
    A compound ' X ' absorbs 2 moles of hydrogen and ' X ' upon oxidation with KMnO4/H+KMnO_{4}/H^{+} gives the three products shown (propanone, ethanoic acid and 4-oxopentanoic acid). The total number of σ\sigma bonds present in the compound ' X ' is ______\_\_\_\_\_\_ .

  5. Question 5

    3 Apr 2025

    42
    Which compound would give 3-methyl-6-oxoheptanal upon ozonolysis?

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  6. Question 6

    4 Apr 2026 S1

    39
    An alkene (X) on ozonolytic followed by reduction gives following products. The alkene ( X ) is :

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