If you score 70 marks out of 360, your expected rank could be between 9000 to 12000 in the General category. This may change each year depending on the difficulty level of the exam.
With 75 marks, it is difficult to get a seat in top IITs for the General category. However, if you belong to SC, ST, or OBC category, you might get a lower-ranked IIT or preparatory course.
Exact topper details for 348 marks are not publicly confirmed. But top rankers usually score around 330–350, depending on the year’s paper difficulty. This score would typically be Rank 1 to 10.
A rank of 7000 is moderate. In the General category, you may get branches like Metallurgy, Chemical, or Civil in new IITs. It is not enough for Computer Science in top IITs.
With 25000 rank, chances are very low in the General category. You may only get into preparatory courses or may not get a seat at all. Reserved categories might still have limited chances.