Colleges in Jaipur

RTU (Rajasthan Technical University) is a university in Kota. There are many government colleges in RTU or in different cities of Rajasthan such as Jaipur, Ajmer, Kota, Jodhpur, Bikaner & many more. My advise for you is that you should 1st clear your mind about colleges in which you are willing to take admission.

You can join by direct admission or by REAP process. Actually, all the colleges have some seats where they take direct admission.

No, LLB course is of 5 years. There is no three year course available in LLB.
If you need to know about the fee structure, it varies from year to year. So better to go through banasthali.org site for fee structure of LLB course.
And also, after a talk with my LLB seniors, the education in this field is good there and also, you will enjoy senior junior good relations in this course.

Frankly speaking, IIITs are well known for information technology courses. It's quite tough to differentiate between these institutions. However, to help you I am attaching a link that will give you all the required information about not only these institutions but all the colleges in India which are offering this branch for studies.
https://www.shiksha.com/b-tech/ranking/top-computer-science-engineering-colleges-in-india/46-2-0-0-0
Best wishes to you.

https://www.shiksha.com/mba/colleges/mba-colleges-Jaipur
The given link contains all details about the decent colleges in Jaipur for pursuing MBA.

Dear Dixith,
Yes, it is valid. The NIOS Certificate is just valid like other educational boards like CBSE, ICSE and others. You can surely apply for the Airline Institution after your NIOS studies.

IIIT Allahabad ECE is the better option than MNIT Jaipur for electrical because ECE is much better and designed according to the today's market needs. IIIT Allahabad is the best IIIT amongst government IIITs.

Go for mnit Jaipur electrical as metallurgy branch has limited scope.