Q. Consider the following:

1. Pyroclastic debris
2. Ash and dust
3. Nitrogen compounds
4. Sulphur compounds

How many of the above are products of volcanic eruptions?
Answer: All Four
Notes: Pyroclastic debris, ash and dust, and sulphur compounds are all common products of volcanic eruptions, released during explosive events and outgassing. While volcanic eruptions may emit small amounts of nitrogen compounds, these are not typical or major products .