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Everyday Science Hard PPSC Uploaded: 01 Sep 2026

Which of the following is the main gas responsible for causing the 'bends' in deep-sea divers?

  • A Oxygen
  • B Carbon dioxide
  • C Nitrogen
  • D Helium
Correct Answer: Option C — Nitrogen
Explanation:
Nitrogen dissolved in the blood under high pressure can form bubbles when a diver ascends too quickly, causing decompression sickness known as 'the bends'.
Submitted by: PaperMCQs
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