Dear saloni sharma
Yes you can give jee again in 2011.but after selection if you have taken admission in any IITs ,IT BHU or ISM Dhanbad.then u are not eligible for jee 2011.
If you are selected in jee 2010 and after u have not taken in any above maintion college then u are eligible for jee 2011.
Please feel free to post as many doubts on our discussion forum as you can.
If you find any question Difficult to understand - post it here and we will get you
the answer and detailed solution very quickly.
We are all IITians and here to help you in your IIT JEE preparation.
All the best.