Other state ke students ko reservation  milegaa ya nhi  exam main . 

R u sure?

But net p tha dat k Kolkata board s cleared hna chahiye 12th

You must have completed your 10+2 from the Board recognized by the University of Calcutta, which means WBCHSE, ISC, CBSE and Rabindra Mukta Vidyalaya.And if it is some other board then you must obtain its “Equivalence Certificate” from the office of the University of Calcutta and also submit a photocopy of 10+2 Mark Sheet along with the written application.

I HD given from CBSE

Means I can apply

Yes ,You can