The order of reaction for which the units of rate constant are $\mathrm{mol} \mathrm{dm}{ }^{-3}…

The order of reaction for which the units of rate constant are $\mathrm{mol} \mathrm{dm}{ }^{-3} \mathrm{~s}^{-1}$ is
  1. 2
  2. 1
  3. 0
  4. 3

Asked in: MHT CET 2021 (23 Sep Shift 2)

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