Chemistry · Environmental Chemistry
Consider the following statements: Statement I: Polycyclic Aromatic Hydrocarbons (PAHs) are flat, ring-shaped molecules made up of carbon and hydrogen that are found both on Earth and in interstellar space. Statement II: In interstellar molecular clouds like Taurus Molecular Cloud 1 (TMC1), PAHs are destroyed quickly due to exposure to starlight and cannot accumulate in any significant quantity. Statement III: On Earth, PAHs are primarily formed by incomplete combustion or pyrolysis of organic matter such as fossil fuels or biomass. Which one of the following options is correct in respect of the above statements?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both Statement II and Statement III are correct, and both of them explain Statement I.
- 2Both Statement II and Statement III are correct, but only one of them explains Statement I.
- 3Only one of the Statements II and III is correct, and that explains Statement I.
- 4Statement II is incorrect, but Statements I and III are correct.✓
Correct answer
Statement II is incorrect, but Statements I and III are correct.
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