Hello Vaishnavi Neelegar,

Felling wonderful for your interest to become an IITian, you can get the previous year main question papers in the official website of NTA(national testing agency) which conducts the JEE mains in India. the link of the official website is here: www.jeemain.nta.nic.in (//www.jeemain.nta.nic.in) . prepare well and you definitely crack it, move with more confidence and notification, all the best.