Which one chemical reaction occurs during photosynthesis ?

(a) Carbon dioxide is reduced and water is oxidised.

(b) Water is reduced and carbon dioxide is oxidised.

(c) Both carbon dioxide and water are oxidised.

(d) Both carbon dioxide and water are reduced.

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Solution

Correct option is A)
Photosynthesis is the process of preparing food in the presence of sunlight and chlorophyll. In this process, the plant uses water from the soil, carbon dioxide from the air.
Carbon dioxide + Water + light energy → Glucose + Oxygen
It occurs in green plants, certain algae, blue-green algae and bacteria. During this process, carbon dioxide is reduced into glucose while water is oxidized as it is split to release electrons, protons and atomic oxygen.

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2 P b O (s) + C (s) \to 2 P b (s) + C O_{2} (g)

Which one chemical reaction occurs during photosynthesis ?

1)CO2 is reduced and H2O is oxidized

2) CO2 is oxidised and H2O is reduced

3)both are oxidized

4) both are reduced

Please include the reason also

3 B r_{2} + 6 C O_{3}^{2 -} + 3 H_{2} O \to 5 B r^{-} + B r O_{3}^{-} + 6 H C O_{3}^{-}

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