Of the 11 injured, seven were students. All the eight students including the deceased belonged to the Government Inter College Gurna here.
The students had taken lift in the truck to reach their college, Chief Development Officer Pithoragarh Ashish Chauhan said.
The exact cause of the mishap has not been ascertained yet, he said.
Purohit Mehta (16) died on the spot while the injured have been admitted in Pithoragarh district hospital where the condition of three students is said to be serious, he said.