IIT

BITSAT is comparatively tougher than CET, but easier than IIT. BITSAT is about speed and accuracy.

M.Sc. in Chemistry is 2-year career-oriented postgraduate course which comprises a broad variety of modules in chemistry from among which students can choose to specialize in any. The course consists of advanced lessons in Analytical Chemistry, Bioanalytical Chemistry, Solid State Chemistry, Materials Sciences, Polymer Sciences, and such.

Hello Karan,
The admission into IITs for engineering programs is based on the ranks In JEE Advanced exams.
For that, you also need to clear JEE Mains.
The eligibility is to have at least 75% in board exams (for general category) and for reserved categories you need to have a minimum of 65%.

Hello Pushpendra,
Yes, unlike NEET for medical aspirants, engineering aspirants need to apply for very many entrance exams. Firstly, entrance exam of their own states, entrance exams of almost each & Every deemed university, You too will have to follow above routine.

Hello Aadhithya,
For admission into B.Arch courses at IITs, you need to clear JEE main papers 1&2. Then, you also need to clear JEE Advanced after which you will be eligible to give AAT (Architecture aptitude test). Based on the scores in AAT, you can get admission for B.Arch in IITs.

IIM is for MBA. IIT is mostly based on B.Tech and if you want admission in top 5 IIM college, you need to crack the CAT exam with maximum percentile of 95%.
Good luck.