Very well! So I can directly go for llb there on merit basis! Right?

Yes, right.

Ruchika.
If you wish to puruse law after class 12th you will have to do an integrated course of 5 years like BA LLB, BCOM LLB, BBA LLB etc. Such courses combine law with a UG course. And it is for aspirants looking to purse law after 12th. So all NLUs including the ones mentioned in your question and other colleges providing law courses for 12th pass students provide ONLY 5 year integrated law courses.
There is another type of law course in India which is LLb for 3 years. Which can be pursued only after graduation. So you need to be a graduate in any degree like BA BCOM etc after which you can go for 3 year LLB degree in various Law colleges.
The colleges you have mentioned NLUs provide only t year integrated courses and there are separate colleges for 3 year Law.

So mam, I can't do llb directly as you are saying after 12th?

But nalsar Hyderabad or nlsiu doesn't offer bba or bcom courses, also I gave to prepare for competitive exams, so 5 years will be too long, so are you sure that I can't do llb directly?

Yes I am sure that you can't do LLB after 12th directly. These colleges offer Only BA LLB. And if you're from commerce background you can do BA LLB also. There are many people who prepare for competitive exams like UPSC etc after law. But if you're not okay with 5 spending 5 years then you will have to go for a graduation degree like BCOM, BBA etc only. You can't do 3 year LLb after 12th directly.