Hi Beena ,
It depends on what rank you attain in JEE . cutoffs wud surely be lower then last year as the intake has gone high but we can not surely say weather or not a student with 160 marks will get IIT .
you can check out below links for more information
http://www.askiitians.com/IIT-JEE-2010-Cut-Offs.aspx
Click the link below link for opening and closing rank of IIT :
http://www.askiitians.com/iits-2009-2010-opening-and-closing-rank.aspx
Cutoff in new IITs check the link give below :
http://jee.iitd.ac.in/openclose09.htm
All the Best !!
AskIITians Expert
Anshul