Air is present all around the earth in the atmosphere. Air is a heterogeneous mixture of different gases. The gases present in air are –Nitrogen (78.1 %), Oxygen (20.9 %), Carbon dioxide gas (0.038%) and rest other gases lie Argon, Water Vapour etc. (1%).
AIR AROUND US Chapter 15 Class VI Read More »
Sewage is the liquid containing wastes/ liquid waste removed from the houses, factories, workshops, surface run-off water and agriculture. It is dark in colour and contains human faeces, urine, soaps, oils, grease, germs, chemicals, paints etc. These are called water pollutants or contaminants
WASTE WATER STORY Class 7 Chapter 18 Read More »
Use jute or cloth bags instead of polythene bags. Do not throw the waste food items on plastic bags. Do not burn the plastics. Try to reuse many a time or let it recycle by selling plastic items no longer in use. Awareness programmes about minimum use of plastic should be organized and particularly their throwing here and there should be stopped.
GARBAGE IN, GARBAGE OUT CLASS 6 CHAPTER 16 Read More »
The period during which the human body undergoes various changes leading to reproductive maturity is called adolescence. It is called as a period of storm and stress in life. The need is to understand it as normal growth and development process.
REACHING THE AGE OF ADOLESCENCE CLASS 8 CHAPTER 10 Read More »
Water is a precious resource. It is like an elixir for life. Without water the survival of living organisms cannot be imagined. Every year world water conservation day is observed on 22nd march.
WATER: A PRECIOUS RESOURCE CHAPTER 16 CLASS 7 Read More »
The light coming out of a torch is a beam of light. The beam of light is made up of light rays. Simply, a narrow beam of light is called as ray. When a light ray falls on a reflective surface like mirror, it gets reflected in other direction with some angle.
LIGHT Class VIII Chapter 16 Read More »
Magnets are used in various fields. Electricity and magnetism are closely related to each other.
FUN WITH MAGNET CLASS 6 CHAPTER 13 Read More »