NIT

You must score more than 500 to get admission in top 5 NITs.

You can take admission in NITT, NITK or NITW for ECE. All three of them are top colleges for ECE.

Yes, CSAB special round is for some special colleges like IIITs and other private college like Techno India. People do get seats from CSAB special rounds. For more information regarding CSAB please visit the JEE counseling portal.

At 180, your rank will be around 10k to 12.5k, so you will get a seat in NIT, but the thing is which branch you prefer Getting CSE in good NIT is sort of impossible, but core like mechanical or ECE is an option, home state quota also plays major role in deciding the seat. So, above 210 will be a good better.

Hi, You can use the JEE-Mains 2018 College Predictor option available on Shiksha. Com. College Predictor helps students to get an idea about the chances of admission in the college of their choice based on JEE-Mains 2018 result. Please refer the link below for your reference:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

You can check this year's category wise opening and closing ranks of round 6 counselling at
https://josaa.nic.in/webinfocms/Public/View.aspx?page=71
Check for the Homestate NIT first. There you may get an idea of your selection.

Hello Pritesh,If you are looking forward to pursue B.Tech in Computer Science, then best for CS is :-
NIT Tiruchirappalli
NIT Warangal
MNNIT Allahabad
NIT Surathkal
NIT Calciut
NIT Rourkela
VNIT Nagpur.

Special round is the last round of counseling, and it's especially for students who have not yet allotted any seat from previous counselling rounds. So, to make sure students should not be left behind and seats to be full filled special round is taken by Colleges. Regards.

Hello,
You can input the details in the below link to find out which colleges you can get:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=6375912
Accordingly, you can take the decision.

Hello,
You can input the details in the below link to find out which colleges you can get:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=6375912
Accordingly, you can take the decision.