1.

For a complex reaction……

Answer»

order of overall reaction is same as molecularity of the slowest STEP.
Order of overall reaction is LESS than the molecularity of the slowest step
order of overall reaction is GREATER than molecularity of the slowest step.
molecularity of the slowest step is NEVER ZERO or non integer.

Solution :Overall order of complex reaction =molecularity of slow step because rate of reaction =rate of slowest step so order of reaction=molecularity of slow step.
(D)The product is form when reactant is there.So molecularity of reaction can.t be zero or fractional


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