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Everyday Science Easy FPSC Uploaded: 01 Sep 2026

The main gas used in the process of photosynthesis is:

  • A Oxygen
  • B Carbon dioxide
  • C Nitrogen
  • D Hydrogen
Correct Answer: Option B — Carbon dioxide
Explanation:
Plants absorb carbon dioxide from the air during photosynthesis and combine it with water to produce glucose and release oxygen.
Submitted by: PaperMCQs
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