Railway Exams
Free courses
General Science
Chemistry
Lesson 6 of 6 • 11 upvotes • 13:18mins
This lesson explains man made materials like plastics, rubber, fertilizers, dyes and glasses
6 lessons • 1h 16m
Metals and Non-Metals (in Hindi)
13:47mins
Metallurgy (in Hindi)
13:04mins
Carbon and its Compounds ( In Hindi)
11:29mins
Metal Ores and Some Facts about Metals (in Hindi)
11:27mins
Fuels, Explosives and Polymers (in Hindi)
13:27mins
Important Man Made Materials (in Hindi)
13:18mins