8th Science Lectures In Hindi (Part-1)(कक्षा आठवीं की साइंस)

"Crop Production & Management ( )
Introduction to Agriculture Practice ( )
Basic Practices of Crop Production And Preparation Of Soil
Sowing ( )
Adding Manure And Fertilisers ( )
Irrigation ( )
Protection From Weeds ( )
Harvesting ()
Storage ( )
Food From Animals ( )
Microorganisms:Friend & Foe
MIcroorganisms ( )
Where Do Microorganisms Live & Friendly Microorganisms -
Harmful Microorganisms ( )
Food Preservation ( )
Nitrogen Fixation & Nitrogen Cycle ( )
Synthetic Fibres & Plastics
Fibres & What Are Synthetic Fibres ( )
Types Of Synthetic Fibres ( )
Plastics And Plastic As Material Of Choice ( )
Plastic And The Environment ( )
Material : Metals & Non Metals ( )
Metals And Non Metals & Physical Properties Of Metals (, )
Chemical Properties Of Metals And Non Metals ( )
Reaction with Bases & Displacement Reactions ( )
Uses Of Metals & Non Metals ( )
Coal & Petroleum ( )
Natural Resources-Exhaustible & Non Exhaustible (Coal,Coke & Coal Tar)
Petroleum & Natural Gas ( )
Combustion and Flame
What is Combustion,Flame,Flame Structure ( )
Ignition Temperature
How Do We Control Fire & Types Of Combustion ( )
Flame & Structure Of Flame ( )
Fuel & Fuel Efficiency ( )"