Carbon dioxide is a good nucleophile.
Assertion: Carbon dioxide is used in fire extinguishers.
Reason: Carbon dioxide is a colourless and odourless gas.
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.