Railway Exams
Free courses
General Science
Chemistry
Lesson 4 of 5 • 3 upvotes • 8:10mins
It is very important topic in GS and several time in exam so here some of them
5 lessons • 41m
Important SI Unit (in Hindi)
8:15mins
PH Values (in Hindi)
8:29mins
Scalar and Vector Quantity (in Hindi)
8:13mins
List of chemical formula (in Hindi)
8:10mins
Vitamins Diseases Sources (in Hindi)
8:14mins