Dear Aspirant,
There is no such limitation on the number of colleges and choice of branches. You could fill as many as you think you might get. Select all the colleges which you are expecting to get and then arrange them in accordance with your preference. Do the same both college-wise and branch-wise.
Hope this helps.
Few important links:-
https://engineering.careers360.com/jee-main-college-predictor
https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches
https://engineering.careers360.com/articles/josaa-counselling
Thank You.
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