Your rank five lakh is too low for branches like CSE or ECE at Tezpur University under NE quota, because closing rank for CSE general quota was about 61140 and for ECE about 72944 in 2025 round six, mechanical closed at 86155, and civil was beyond that. So with rank 500000 your chance is almost none to get environmental courses there under NE quota. You may consider alternative colleges or try repeat exam.

1, Tezpur University all India cutoff round six closing ranks general quota: CSE 61140, ECE 72944, EE 78802, ME 86155, Civil beyond 90000

https://www.careers360.com/university/tezpur-university-tezpur/cut-off