Statement - I : The reactions $2 N O + O_{2} \to 2 N O_{2}$ and $2 C O + O_{2} \to 2 C O_{2}$ proceed at the same rate because they are similar.
Statement - II Above two reactions will have different activation energies.

Both statements are true Statement - II is correct explantion of Statement - I

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Both statements are true but Statement -II is not correct explantion of Statement - I

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Statement - I is true but Statement - II is false.

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Statement - I is false but Statement - II is true.

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Solution

The correct option is D Statement - I is false but Statement - II is true.
they will not proceed at the same time because they have different activation energy
So [D]

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Statement - I : The reactions 2NO+O2→2NO2 and 2CO+O2→2CO2 proceed at the same rate because they are similar.Statement - II Above two reactions will have different activation energies.

The correct option is D Statement - I is false but Statement - II is true.they will not proceed at the same time because they have different activation energySo [D]

Statement - I : The reactions $2 N O + O_{2} \to 2 N O_{2}$ and $2 C O + O_{2} \to 2 C O_{2}$ proceed at the same rate because they are similar.
Statement - II Above two reactions will have different activation energies.

The correct option is D Statement - I is false but Statement - II is true.
they will not proceed at the same time because they have different activation energy
So [D]