sir..if we join at Rajiv gandhi institute of petroleum wil EML rank...then can we attempt jee the next year??

Yes , you can ...

Eligibility Criteria for IIT JEE 2010

The candidate who have passed 12th or equivalent with aggregate 60% marks, eligibile for IIT JEE 2010.
5% relaxation  for SC/ST candidates in aggregate in 12th or equivalent exam.
The students who are appearing for 12th board exam can appear in IIT JEE 2010.

Age Limit: For General category the candidates should not be more than 25 years as on 1st october 2009, For SC/ST candidates the age limit is 30 years.

All the Best !!!

sir..hw do u feel after joining iit?how is the environment ther??is it hard to survive even if we r ready to work hard?