In the following questions two or more options may be correct.
During decomposition of an activated complex
(i) energy is always released
(ii) energy is always absorbed
(iii) energy does not change
(iv) reactants may be formed
The answer is the option (i, iv) Activated complex is an intermediate formed at the highest level of energy of the system. Some energy is released with the decomposition of this unstable complex to give products. If the reaction is reversible, reactants might be formed.