Civil Engineering is a branch which is offered in most of the top IITs and NITs, the premier among them being IISc, IIT-Mumbai, IIT-Madras, IIT-Delhi and IIT Kharagpur. There are other specialized colleges like NICMAR that students can apply to.
Students pursuing B.Tech or B. E. in Civil Engineering can answer the GATE Civil Engineering paper. The test covers 6-7 major subjects: Transportation Engineering, Structural Analysis, Environmental Engineering, Soil and Foundation Engineering, Water Resources, etc. It also tests students on Engineering Mathematics and General Aptitude.
Students who qualify in the GATE exam can apply to these colleges. GATE score is also valid for quite a few companies like ONGC, BSNL, GAIL, etc. Even private companies like L&T give preference to GATE qualified students.