A) zero
B) first
C) second
D) third
Correct Answer: D
Solution :
Unit of rate constant for nth order \[=mo{{l}^{1-n}}\,{{L}^{n-1}}\,{{s}^{-1}}\]where n is order of reaction For zero order \[=mol\,{{L}^{-1}}\,{{s}^{-1}}\] First order \[=\,{{s}^{-1}}\] Second order \[=mo{{l}^{-1}}\,L\,{{s}^{-1}}\] Third order \[=mo{{l}^{-2}}\,L{{\,}^{2}}{{s}^{-1}}\]
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