Graphic / Web Design

On average, learning graphic design and obtaining a degree from a traditional university takes about 4 years, which will usually earn you a Bachelors degree. While 5-6 year Masters Degree programs are available at some schools, a vast majority of students aren't looking to spend that much time behind a desk.

Required Minimum overall 60% and 50% each subject

Yes you can. Work on your portfolio and you are pretty much likely to fly off anywhere if your portfolio is strong, that is.

Yes Archana, Both the courses have a lot of scope in future because of their high demand which makes it upp for a promising career. If you wish to choose any of them, it would be a good decision. You'll have a good going career.
Graphic designing is a career where you'll create visual content to communicate thoughts and is user experience based whereas Visual Communication Design is based on the combined strategy of art and language to communicate ideas and messages.
Both of them are careers which are very demanding and you can select any of the career you are more interested in.

NIFT entrance examination is Institutional based examination which will only help you to get into NIFT whereas UCEED is a common Entrance Examination which is accepted by many design colleges and universities. So if you plan to get into only NIFT then you do have to give NIFT Entrance Exam but if you plan to apply in many universities then UCEED is a better option as you'll have many university choices and you can get admission on the basis of UCEED score.

You can check out the following for more information - https://www.shiksha.com/college/image-creative-education-jayanagar-bangalore-32625