Your best place to find 2018 past papers of general science 10th class from bise rawalpindi board. These old up to date papers can be downloaded or viewed online.
2018 General science Past Papers 9th Class BISE Rawalpindi Board Analysis
Campus.pk gives you unique insight into each past paper about what are the top chapters and topics.
General-science Past Papers 9th Class BISE Rawalpindi Board