Hii Nisha, 

This is Shalini . 

You have not mentioned for which college you are asking.

But I am telling the common process for admission in all colleges-

B.SC. IT is a 3 year undergraduate course.The minimum eligibility for this course is 10+2/ intermediate qualification.

Admission in this stream is based on the candidate's performance in the entetence test and counselling.

Hope my answer will help you . 

Thank you. 

Dear student The basic eligibility criterion for pursuing B.Sc. (Information Technology) degree is qualifying 10+2 or equivalent examination in Science stream with Maths, Physics and Chemistry as subjects studied and with a minimum of 50% marks secured in Maths and/or in aggregate from a recognized board of the country.
i give you few college name given below
Miranda House, Delhi.
Hindu College, Delhi.
St Stephen's College, Delhi.
Kirori Mal College, Delhi.
Loyola College, Chennai.
Madras Christian College, Chennai.
Hansraj College, Delhi.
Department of Sciences, Christ University, Bengaluru.
Thank you