JEE Main

The final AIR will be declared after April 2019, considering the best score out of the two JEE Main attempts for all the applicants, hence based on current percentile we cannot predict, whether you will qualify for top government college for CSE or not. Wait for the final AIR declaration.
Details:
https://www.shiksha.com/b-tech/articles/how-to-calculate-jee-main-rank-from-percentile-blogId-19953.

In JEE Mains, there is no individual sectional cut off. So, you can attempt single section (Maths) also as in your case. Now, suppose if you have attempted all the questions correctly, than your score will be 120. So, on the basis of your score, you can get easily admission in any government Colleges of your state in B.Tech courses. Further, you can also qualify for JEE-Advance also, and securing a good rank can admitted you in IITs also.

The cut-offs differ year to year based on the highest score. Compared to last year this percentile might be difficult to get into the college, but you can always apply.

We can't say it, till NTA declare it's cutoff for this year. But, you can refer this link, you can find the list of colleges, which you could get over this rank. https://www.shiksha.com/b-tech/resources/jee-main-rank-predictor.

Hello Hrishikesh,
I am afraid this information has not been released by NTA till now. Perhaps it will release all such data only after second set of exams has been conducted in the month of April. Till then only patience.
Best wishes to you.

You won't be able to make it to NIT's for CS. You can try applying some other institutes which accept JEE Mains score.

You have to appear for counseling round of JEE Mains and choose IIITs in your college preferences. That's it.

The final AIR will be declared after April 2019 considering the best score out of the two JEE Main attempts for all the applicants, hence based on current percentile we cannot predict whether you will qualify for JJ college or not. Wait for the final AIR declaration
Details:
https://www.shiksha.com/b-tech/articles/how-to-calculate-jee-main-rank-from-percentile-blogId-19953.

Your Predicted Rank is 174800 JEE Main Percentile 80, AIR, GEN). Above is the possible rank you can get. The final rank will be based on the best of the scores of JEE-Mains January 2019 and April 2019 exam. The predicted rank may vary due to JEE Main tie breaker rules for same score. Kindly visit the following link for predictions of colleges: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

Kindly wait for the ranking cut off to be released, post JEE Mains April 2019, for the particular college of interest. Meanwhile, follow the link: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor