Uttar Pradesh

There is not a huge difference but yes difference is there as the average pack of Noida campus INR. 2.95 Lacs and for the solan campus is INR. 2.65 Lacs.

Yes, but with clearing criteria and in a merit scoring rank.

You should appear in JEE counseling and select list of colleges wisely. Include HBTU and Some good private colleges also. And, if you had given some other entrance exams. You should appear in their counseling too.

For CS branch, NIET is the best. The placement percentage of CSE branch is about 80% to 90%, which is fantastic. About 40% of the students got internships from college.The highest package offered was about 12.5 lacs per annum.The lowest package was 2 lacs per annum and average package offered was ab

Both are equally good.
As you have asked to compare both so, in my opinion KIET offers high placements.

I guess, you might get into car if your general rank is below INR. 1.5 lacs. Best of luck.

As per information publicly available the institute at Noida is better, this would be attributed to it's better performance with respect to placement and infrastructure.