Colleges in Himachal Pradesh - Other

I am studying in JUIT (B.Tech ECE).
The previous year's rank cut-off for CS was 1.5 to 2 lakhs.
So, my advice is you fill the Jaypee application form and attend the counselling.

I think you have bad Marks in JEE, then you will also not be getting any Government Colleges. You should try for other private colleges. Try this Shiksha college predictor to get the colleges on the basis of your JEE Mains rank. Wish you best of luck. https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=cconnect&utm_medium=CR_JEECP&utm_campaign=6540165.

You can only get admission in 3rd semester directly, if you have done Diploma.

No, for BCA, Maths is a compulsory subject.

Yes, you may get. You have a fair chances of getting a seat in IIT just wait for counseling procedure that is CCMT but I have doubt that whether this IIT offer this course in which you want to take the admission since many other IIT too offered this course but this IIT does't because last year also this IIT did not release the cutoff for power electronic. So I suggest you take just verify whether the course is available in the IIT or not. Also check other IIT like Delhi, Bombay this might offer seat in power electronic.