I would suggest you to go through with the given below link to check the previous year papers of CLAT PG.

https://law.careers360.com/download/clat-pg-sample-papers-previous-years

A number of PSUs recruit for the position of Trainee Legal Advisors through CLAT.Some of the PSUs expected to recruit Trainee Legal Advisors this year through CLAT are NTPC, OIL, ONGC, etc.
You need to apply for CLAT PG Application form & qualify the exam if you meet the cutoff to be eligible for filling application form of respective PSUs recruiting the Trainee Legal Officers then you can apply.

Good Luck!