The deceased has been identified as Sanjay. Injured Praveen was admitted to a private hospital here, police said.
The accident took place when the two were going to village Behbalpur, about 12 km from here to meet their relatives after attending a marriage function in village Badopati, they said.
Irate villagers set the bus on fire and also damaged another roadways bus by pelting it with stones.
They also blocked traffic on Hisar-Chandigarh road for about four hours.