Hi

I am sorry to say but 40 percentile is too low. Assuming you are general category your rank should be around 371,782 to 457,626. The cutoff for jee mains general category is 88- 95. With this score you won't be able to appear for jee advanced.

To get more accurate result about your rank visit:

and to see which college you are eligible for visit:

i suggest you study hard and sit for jee mains once again with better preparation and get into nits or iits.

Best of luck

Hope this helps