If the value of rate constant for a reaction is 2.19 X1038-7
then the order of reaction is

(a) 1
(6/0
(c) 2
(d) 3

Dear student
Your question is incomplete. The rate constant needs to have a unit assigned to it in order to find out the order of reaction.
For example, 
For zero order reaction units of k would be mol/l/sec
For first order reaction, k= sec-1
for second order reaction , k = L mol-1 sec-1
For third order  , units of k= mol-1 L2 s-1
Regards

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