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General Science question from FAA exam, 2022 by JKSSB

Which is the only non-metal that reacts with air to form its oxide by burning?

Last updated May 13, 2026
Correct Answer: Option D — White phosphorus
Why the other options don't fit:
Arsenic (A): While a metalloid, it requires heating before it will burn in air to form arsenic trioxide.

Gas Carbon (B) and Graphite (C): These are forms of carbon. They are very stable at room temperature and require significant external heating (ignition) to burn in air to form carbon dioxide. They do not catch fire "by burning" upon simple exposure to air at standard conditions.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
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JKSSB FAA 2022

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Exam JKSSB
Recruitment FAA
Year 2022
Subject General Science
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