Multiple choice

Which is the only gas that does not show any cooling effect during throttling process at atmospheric temperature and pressure?

  1. CO2

  2. O2

  3. H2

  4. N2

  5. H2O
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hydrogen is a chemical element with chemical symbol H and atomic number 1. With an atomic weight of 1.00794 u , hydrogen is the lightest element and its monatomic form (H1) is the most abundant chemical substance, constituting roughly 75% baryonic mass of the universe .

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