IIT

Last year, the fee structure was Rs.59, 876 without the hostel fee. It can change according to the categories.

To get admission in NIT, a candidate must appear for JEE Mains. Unless, you appear for the entrance exam you won't get admission in National Institute of Technology. The eligibility criteria for entrance exam is class 12th with PCM as the subjects.
Apart from IIT and NIT, most colleges in India offer lateral entry for Diploma students. These colleges do reserve some seats for lateral entry students.
All the best.

You need to be confident and revise formulas. Do not try to learn new concepts and take a complete sleep.

In my opinion, HC Verma is a sufficient tool for JEE mains and advanced. If you have a strong foundation, then solve problems from it. This will strengthen your concepts. However, if you want to make your fundamental clear, I would suggest you to refer some other good books like Pradeep or ABC.
All the best.

Diploma holders in engineering are not eligible for admission in B.Tech as IITs do not have provision of lateral entry admission in B.Tech. If you have done Diploma after 12th, you can appear for JEE to seek admission in IITs.

You should know the basics of drawing at least, rest the details are taught during the course only. IIT is one of the best institutes to do B.Des course because of its recognition.
But, you can apply for these colleges as well:
1. NID - Ahmedabad
2. Symbiosis Institute of Design – Pune.
3. UPES – Dehradun.

Hello,
The objective of JAM is to provide admissions to various MCA, M.Sc, joint M.Sc – Ph.D, M.Sc – Ph.D dual degree and other post Bachelor degree programs at the IITs based on the performance in a single test. The eligibility criteria for IIT JAM is 55% aggregate marks in the Bachelors degree.
You can check the below mentioned link for the complete IIT JAM admission procedure:
https://scoop.eduncle.com/iit-jam-admission-procedure
You can check the below mentioned link for the best institutes for MCA:
https://www.tcyonline.com/mca/topinstitutes.php
I hope it helps.

The number of hours actually don't matter for studying. It depends on how the concepts and topics are getting clear to you. Whatever you read, do it efficiently at a time. It is better to plan your studies.