Yes it is possible to pursue bsc in computer science through class 12th marks or personal interview without taking any entrance exam.many universities and colleges offer admission to BSC computer science sme are

1.chandigarh university

2.amity university

3.galgotias university

4.sharda university

5.pes university etc.

Generally in private colleges you may get direct admission but they charge more fee than regular ones if you are ok it then go ahead.all the best