Lesson 6 of 15 • 115 upvotes • 8:37mins
Combustion ,ignition temperature, extinguishing fire
15 lessons • 2h 32m
Crops
12:02mins
Micro-Organisms
12:35mins
Synthetic Fibre
9:34mins
Metals and Non Metals
7:31mins
Natural Resources - Coal and Petroleum
9:27mins
Combustion
8:37mins
Cell and its Components
8:14mins
Reproduction in Human Beings
8:00mins
Sex Determination in Baby and Endocrine System
9:40mins
Force and Friction
10:31mins
Sound and Chemical Effects of Electric Current
12:11mins
Natural Phenomenon -Llightning and Earthquake
9:43mins
Light and Human Eye
9:49mins
Solar System
12:31mins
Air Pollution and Global Warming
11:27mins