According to my experience ,yes you'll have problems.
You should have prior experience with computers in any way. I am telling you this because right now IT is saturated and unless you are best in your field you won't get good placements. IT has changed a lot and everyday there is a new technology advancement like big data , neural networks , deep learning
If you are ready to dedicate hours to learning everyday don't take IT

No not at all
You will be taught from the starting the everything
So no problem
If your aim is to work in MNC'S then now a days IT And computer science is a must
There should be your interest and other things will handle by themselves
If you have taken bio then you can do bio technology also

No, you will not face any problem in doing engineering program in IT.

It's all depends on your interest and passion.

It is recommended that you should learn programming Languages like- C, C++ it is not mandatory but it will be easy for you.

 

Good Luck!!