CLASS: VIII :: Cell-Structure and Functions
CLASS: VIII NCERT (CBSE)
Biology
Cell-Structure and Functions
SUMMARY
Introduction to Cells
With the help of a microscope, an English scientist,Robert Hooke, first discovered the existence of cells in...
CLASS: VIII :: Conservation of Plants and Animals
CLASS: VIII NCERT (CBSE)
Biology
Conservation of Plants and Animals
SUMMARY
Deforestation and Reforestation
Deforestation is the clearing of forests to use the land for cultivation, building houses and...
CLASS: VIII :: Micro Oraganisms: Friend and Foe
CLASS: VIII NCERT (CBSE)
Biology
Micro Oraganisms: Friend and Foe
SUMMARY
World of Micro Organisms
It'll be exciting to learn about microbes because we humans have microbes in our...
CLASS: VIII :: Crop Production and Management
CLASS: VIII NCERT (CBSE)
Biology
Crop Production and Management
SUMMARY
Agriculture
The term crop is used to describe plants of the same kind that are grown and cultivated at...
CLASS: VIII :: Pollution Of Air And Water
CLASS: VIII NCERT (CBSE)
Chemistry
Pollution Of Air And Water
SUMMARY
Air Pollution
Substances that cause harmful changes in the air are called pollutants. Air pollution is caused due...
CLASS: VIII :: Combustion And Flame
CLASS: VIII NCERT (CBSE)
Chemistry
Combustion And Flame
SUMMARY
Combustion
The chemical process in which a substance reacts withoxygen to give off heat is called combustion.
A substance that undergoes...
CLASS: VIII :: Coal And Petroleum
CLASS: VIII NCERT (CBSE)
Chemistry
Coal And Petroleum
SUMMARY
Natural Resources
Resources supplied by nature are called natural resources. The sun, air,...
CLASS: VIII :: Materials, Metals And Non-Metals
CLASS: VIII NCERT (CBSE)
Chemistry
Materials, Metals And Non-Metals
Physical Properties Chemical Properties of Metals
Metals are used in making machinery, automobiles, aeroplanes, buildings, trains, satellites,...
CLASS: VIII :: Stars And The Solar System
CLASS: VIII NCERT (CBSE)
Physics
Stars And The Solar System
Celestial Bodies
Stars are always fascinating to mankind. They are the most beautiful celestial bodies, about...
CLASS: VIII :: Light
CLASS: VIII NCERT (CBSE)
Physics
Light
Reflection in Plane mirrors
Light is a form of energy given out by a self luminousbody, which...
CLASS: VIII :: Some Natural Phenomena
CLASS: VIII NCERT (CBSE)
Physics
Some Natural Phenomena
Introduction and Lightning
Lightning is a natural phenomenon that has fascinated people for ages. Several people thought and researched...
CLASS: VIII :: Chemical Effect Of Electric Current
CLASS: VIII NCERT (CBSE)
Physics
Chemical Effect Of Electric Current
SUMMARY
Conductivity of Liquids
We can use a tester to check if electricity is flowing through a wire in...
CLASS: VIII :: Sound
CLASS: VIII NCERT (CBSE)
Physics
sound
SUMMARY
Production and Propagation of sound
Sound is a form of energy that causes the sensation of hearing. Sound needs a medium...
CLASS: VIII :: Friction
CLASS: VIII NCERT (CBSE)
Physics
Friction
SUMMARY
Friction and its Types
Friction is a force that opposes the relative motionbetween two surfaces of...
CLASS: VIII :: Force And Pressure
CLASS: VIII NCERT (CBSE) ...
CLASS: IX :: Improvement in Food Resources
CLASS: IX NCERT (CBSE) ...
CLASS: IX :: Natural Resources
CLASS: IX NCERT (CBSE) ...
CLASS: IX :: Why do we fall ill
CLASS: IX NCERT (CBSE) ...
CLASS: IX :: Sound
CLASS: IX NCERT (CBSE) ...
CLASS: IX :: Work and Energy
CLASS: IX NCERT (CBSE)
Work and Energy
SUMMARY
• The essential conditions to be satisfied for work to be done are:
Some force must act on the object
The...
