the order of reaction can be obtained from?
A)chemical equation
B)thermo chemical equation
C)chemical equilibrium
D)rate law expression

We won't do your homework for you. What do YOU think the correct answwer is? Why?
We will help you get it if you need help.

Furquan_ali, by joining this site, you should be aware that we do not merely give answers to homework questions. It is not ethical, because YOU were given homework for YOU to do. Do realise that AMHD is NOT a homework service site.

As DrBob said, do post your answer and we'll help you towards the correct answer. Once you get it, we'll tell you.