i am getting 171 marks with 40 81 50 in pcm idont know howto calculate partial marks in paper 1 more than one option  can i get a rank

Please check the cut off of IIT JEE 2010:

http://www.askiitians.com/IIT-JEE-2010-Cut-Offs.aspx

And for detailed branch allotment rank wise as per IIT JEE 2008 rank list is given below:

http://www.askiitians.com/iits-2009-2010-opening-and-closing-rank.aspx

Good Luck !!

For calculating the Partial Marks:

In that sectoion the questions contain multiple Answers, If u can't mark all the Possible options and any marked option is a part of the Answer then mark will be alloted to that option which is right. the marks will be obviously be less than the Max Marks alloted for that question.

In such a case if we mark all the options A,B,C,D as the answers then there is no possibility to loose the question.

I think this case will not be considered, If A,B,C are the right options for that multiple answer questions if u answered B, C then u are eligible for getting Partial marks. Though u may not get the full marks the marks will be alloted as per their criteria.

Please check the cut off of IIT JEE 2010:

http://www.askiitians.com/IIT-JEE-2010-Cut-Offs.aspx

And for detailed branch allotment rank wise as per IIT JEE 2008 rank list is given below:

http://www.askiitians.com/iits-2009-2010-opening-and-closing-rank.aspx

ALL THE BEST !!