The hard or easy is a subjective thing. It may feel easy for someone and hard for some one else. So taking others opinion won't make the subject easy or hard. The thing which makes the subject easy is your interest. See if you are interested in Computer Science and you are upto learn skills then it will be easier for you. The marks of 10+2 won't signify if you will be able to coup up a subject. So don't be worried regarding that. I would suggest you to consider the youtube and get some elementary idea about the course. If you feel like its interesting and you can do things, which you feel to be fun, then pursue BSc IT.

For more information regarding BSC IT as a course consider the link below:

https://www.careers360.com/courses/bsc-it

I hope this helps. Wish you a great eve!