I want to do b.tech in E.E.... which university is better?? upes (dehradun) or gbu (greater noida) ?

UPES is definitely a good choice friend. UPES is the India's as well as Asia's only core sector university. Since, Oil and Gas programs are their flagship programs, so they ensure good placement records for these every year. Reputed core sector companies come for placement in its Dehradun Campus, so you would definitely get good placement opportunities here, too.