MCQ
The metal used in galvanizing of iron is
- A$Pb$
- ✓$Zn$
- C$Al$
- D$Sn$
$A{l^{3 + }}/Al\,\,\,\,\,\,\,\,{E^o} = - 1.662$
$S{n^{2 + }}/Sn\,\,\,\,\,{E^o} = - 0.136$
$P{b^{2 + }}/Pb\,\,\,\,\,{E^o} = - 0.126$
In galvanizing action $Zn$ is coated over iron.
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This reaction was studied at $-10^{\circ} C$ and the following data was obtained
| run | $[ NO ]_{0}$ | $\left[ Cl _{2}\right]_{0}$ | $r _{0}$ |
| $1$ | $0.10$ | $0.10$ | $0.18$ |
| $2$ | $0.10$ | $0.20$ | $0.35$ |
| $3$ | $0.20$ | $0.20$ | $1.40$ |
$[ NO ]_{0}$ and $\left[ Cl _{2}\right]_{0}$ are the initial concentrations and $r _{0}$ is the initial reaction rate.
The overall order of the reaction is ..........
(Round off to the Nearest Integer).