Hello, 

According to WBCS eligibility criteria, candidate's age should be between 21 to 36 years as on January 1, 2019. They must be a graduate in any discipline. WBCS exam is conducted in three phases - Prelims, Mains and Interview. The prelims exam is held for 2 hours 30 minutes. While, each paper of WBCS mains exam is conducted for 3 hours. 

For more details, check here - https://competition.careers360.com/articles/wbcs-2019

All the best!!!

Hello,
West Bengal Public Service Commission conducts West Bengal Civil Services to recruit candidates for various posts under group A,B,C and D. To be eligible for the exam, candidate must be a Graduate fro any recognized University.
Go through the link below to check the detailed eligibility criteria and other details-

https://competition.careers360.com/articles/wbcs-notification

Good Luck!