ITANAGAR, Jul 14: In the recently declared RGU examinations 2017, the students of Dera Natung Govt. College bagged top four positions among the overall top five in the undergraduate examinations, 2017. All the four positions were bagged by students from the Zoology department. Continuing the previous trend, this year Dekey Chumku of department of Zoology topped the 2017 list with 80% marks.