From a given reactants, how to confirm the final-product obtained is a right one?

I'm not sure exactly what you are asking -- do you want to know if your predicted products are correct, or if the product actually obtained is correct?

Hello sir,I want to know is the final product actually obtained for my reaction correct ?

Now you must use your knowledge of Chemistry to prove that the compound in hand has the identity you think it is. This may be easy, it may be difficult. What are you dealing with?