GATE

You need to spend around Rs 2.9 lakhs a years excluding hostels. It is worth doing because VIT provides you a great exposure.

GATE is only required for engineering related jobs. There are many jobs in different departments in government PSUs.

Yes, you can get admission in M.Tech with this rank.

Building Technology and Construction Management (CE1), Environmental Engineering (CE2), Geotechnical Engineering (CE3), Hydraulic and Water Resources Engineering (CE4), Structural Engineering (CE5), Transportation Engineering (CE6) this branch comes in civil but in all you have to choose according to your choice and interest but building, structural, transportation are demanding branch.

Firstly, go through the syllabus, it will be more of 2nd and 3rd year courses. You must revise the concepts, refer the previous year question papers. Take tests based on GATE to evaluate preparation.