hello aspirant,
well go through the below link you will find the technical exam question paper of environmental engineering .
https://engineering.careers360.com/download/sample-papers/srmgeet-2015-question-paper-for-environmental-engineering-answer-key
regarding gate papers, go through below link
https://www.google.com/amp/s/engineering.careers360.com/articles/gate-question-papers/amp
hope you understood,
thank you