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The gas released during photosynthesis is

  • (a) N2 Your answer
  • (b) H2 Your answer
  • (c) O2 Correct
  • (d) CO2 Your answer
Your answer: Correct answer: (c)
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Explanation

Why (c) is correct

Photosynthesis releases oxygen (O2), formed when water is split.

Why the other options are wrong

  • (a) · your answer Nitrogen is not released in photosynthesis.
  • (b) · your answer Hydrogen gas is not released; the hydrogen goes to make NADPH.
  • (d) · your answer CO2 is taken in, not released.
NCERT point: O2 is a by-product of the light reaction.
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