It will be quite difficult to get seat in government colleges with this rank. As the competition is at highest level now-a-days, there is less chance to get seats easily. You should opt for private colleges if you do not want to drop a year and prepare.

However you have another chance to get a list of prescribed colleges against your rank. You just need to use JEE MAIN COLLEGE PREDICTOR. Click the link below, put necessary information and get result instantly.

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

All the best.

Hello raja . See 42000 general category rank can be a benifit sometimes but other backward category rank 42000 is low so its difficult for you to get admission into any prestigious institution of india like national institute of technology or indian institute of information technology but you can try for other colleges because there are n number of colleges which take admission through jee mains score card as well as might get some good branch in them .

You can use this link for that