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In 1774, Joseph Priestly showed that air contains oxygen gas Composition of Air USES OF AIR: Contamination of air by undesirable substances is known as Pollutants Methods to control Air Pollution: If Unable to download Click here Useful Links: CBSE CLASS 6 SOCIAL SCIENCE CBSE CLASS 6 SCIENCE CBSE CLASS…
Black Stone discovered by Greeks is called as Magnetite Magnetite is made up of chemical called Iron oxide Why have they named it as Loadstone? What are called as Magnetic substances? What are Non Magnetic substances? List some of the common characteristics of Magnet? What are the Poles of Magnet? What do…
What is Electric potential The amount of work needed to move a unit charge from one point to another point against the electric field is called as Electric potential. Define Electric charge? Define Potential difference? What is Voltmeter? Voltmeter is an instrument used to measure the electric potential difference between…
Importance of Light: What is the colour of the Sunlight? How do we see various colours around us? What are the various sources of light? Difference between Luminous and Nonluminous source of light? Luminous object Non luminous object The object that produces light on their own is called as luminous…
Some of the Non Standard units of Measurements are Nowadays SI system is used, this system followed from 1960. Standard units of measurement are those that have fixed quantity Other system of measurement MKS – Metre Kilogram Second CGS – Centimetre Gram Second FPS – Foot Pound Second Standard units: Conversions Length…