Hi friend,

Yes,of course you can take up a chance for revaluation if,you are quite sure about your answers that you gave were absolutely correct and there has been any discrepancies in checking your paper.

Hope this helps.

All the best.

Greetings!

If you feel that there has been unfair checking or if you are 100% sure that there is some discrepancy in your marks, only then go for revaluation. 

Revaluation can also result in decreased marks, so take this step after giving it some serious thought. 

Hope this helps.