Question

UPSC Prelims 2024 Question:

Consider the following

Pyroclastic debris

Ash and dust

Nitrogen compounds

Sulphur compounds

How many of the above are products of volcanic eruptions?

1. Only one
2. Only two
3. Only three
4. All four

Answer (Detailed Solution Below)

Option 4: All four

Detailed Solution

Explanation:

The material in the upper mantle portion is called magma. Once it starts moving towards the crust or it reaches the surface, it is referred to as lava. The material that reaches the ground includes lava flows, pyroclastic debris, volcanic bombs, ash and dust and gases such as nitrogen compounds, sulphur compounds and minor amounts of chlorene, hydrogen and argon.

So, all four of the above are products of volcanic eruptions.

Therefore, option (4) is the correct answer.

Subject: Geography | Earthquakes and Volcanoes

Latest UPSC Exam 2026 Updates

Last updated on July, 2026

→ UPSC Mains 2026 will be conducted on 21st, 22nd, 23rd, 29th and 30th August 2026.

→ Enroll in Vajiram & Ravi’s UPSC Mains Test Series 2026 for structured answer writing practice, expert evaluation, and exam-oriented feedback.

→ Go through the UPSC Mains Previous Year Papers to enhance your preparation.

→ UPSC has released UPSC Toppers List 2025 with the Civil Services final result on its official website.

→ UPSC Calendar 2027 has been released.

→ Also check Best UPSC Coaching in India

Tags: factual UPSC Prelims 2023 UPSC Prelims 2023 Question

Abhishek Singh

Abhishek Singh is an SEO Specialist and content strategist with over 4.5 years of experience in driving organic growth across education and service-based industries. He specializes in on-page SEO, technical SEO, content optimization, and data-driven strategies that improve search visibility and organic traffic. His work focuses on creating accurate, well-researched, and search-optimized content that helps students, professionals, and online audiences find reliable information. By combining SEO expertise with a strong understanding of search intent and evolving search technologies, he works to build content that delivers visibility, engagement, and long-term trust.