A) Saponification of\[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\] - second order reaction
B) Hydrolysis of\[C{{H}_{3}}COOC{{H}_{3}}\] - pseudo animalcular
C) Decomposition\[{{H}_{2}}{{O}_{2}}\] - first order rof reaction
D) Combination of \[{{H}_{2}}\]and \[B{{r}_{2}}\] to give HBr - first order reaction
Correct Answer: D
Solution :
Combination of \[{{H}_{2}}\] and \[B{{r}_{2}}\] to give HBr is a zero order reaction as the rate of reaction is not affected by the concentration of reactants. \[{{H}_{2}}+B{{r}_{2}}\xrightarrow{hv}2HBr\]
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