i am studying b.e second year.can i start my gre preperations now and give the exam in third year itself?

yes you can give it at the end of 3rd year and it is valid for 5 years.

Hi, GRE is test which need to be taken by students who wish to pursue MS in engineering and related fields, now a days there are many universities which accepts GRE scores for admission in MBA as well. GRE scores are accepted in universities of: USA. Canada. Germany. Singapore and many more count