JEE Main

You can get private colleges but chance of government colleges are quite less. So, if you have registered for any other state level or private college entrance exams, try to do well in them.
All the best.

Dear Sana!
To be straight;For NITs and State Level engineering college, you need to score in JEE Mains Exam. However, for IITs and other national level engineering colleges you need to score in JEE Advance. Your Selection is also depends upon your category. Hope this helps. Good Luck.

Since the exam has been yesterday only, that's why I can't tell you the cut-off since the result has not been come yet. As soon as the result will be announced of JEE Mains exam, then cut-off will be announced too. Many factors affect the cut-off like number of candidate appears, the highest score in exam etc. The result date is around 30 April 2018.

Yes, you can apply for the Jadavpur University and wait for the counselling. You will definetly got a seat in it. The counselling starts from July 1st week.

You cannot expect a good college at that score, the only option you have is to opt for private university exams like BITSAT SRMJEE, VIT and lot of others are there. So, there's no need to be disheartened just focus on these exams.

This year paper pattern will be same as previous year so cutoff will be around 100-103 for general category. And for other category hardly difference of 3-4 marks from previous paper so don't worry about cut-off.
All the best.

No, you can't get NIT or DTU with a score of 45 as for DTU or NIT 150+ score assured you a seat in NIT or DTU. But on 45 score, it is very difficult even in spot-round also.

You can apply for JEE Mains after 12th.

If you belong to reserved Kotak, then you only need to show is your category wised ranking. Many colleges seek admission on the basis of all India ranking but the traditional way is according to your category wise ranking.
Best of luck for your future!

You have to wait for the cut-off in that much marks. But if you score 50+, you are eligible for JEE Advanced. But its more likely that you will get your chance. Regards.