West Bengal State Exams
Free courses
Science & Technology
Lesson 1 of 5 • 7 upvotes • 2:41mins
This course will help WBPSC aspirants and also Railways aspirants to solve short questions
5 lessons • 50m
Atomic Structure (in Bengali)
2:41mins
13:35mins
Isotope, Isotone and Isobar (in Bengali)
12:32mins
Subshell, Molecules (in Bengali)
8:53mins
Valancy and Electron Configuration (in Bengali)
12:38mins