Hi Nisha,

Hey, If you wanna to get only therotical and bookish knowledge thatn you can go for B.Sc. Environmental Science. If you want practical and do and learn oriented learning than you should go for B. Tech Environmental Engineering. You will get a job in both the degree, but the chances of jobs are more in B.Tech degree.

Refer here for more info - https://www.careers360.com/courses/environmental-engineering-course

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!