On the basis of evolution/absorption of energy, which of the following processes are similar to combustion of fuel?
(i) Photosynthesis in plants
(ii) Respiration in the human body
(iii) Decomposition of vegetable matter
(iv) Decomposition of ferrous sulphate.
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[A] (ii) and (iii)
The process of respiration in the human body and decomposition of vegetable matter involves evolution of energy.