Mention the form and percentage inw hich carbon is present in nature
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Carbon exists in two states:
1. FREE :- Here materials formed are made of 100% carbon and not of any other element. Eg. Diamond, Graphite, Buckminster Fullerine.
2. COMBINED :- Here C combines with other atoms to give rise to compounds. Eg. C exists in the air in the form of CO2 ( 0.04%) and CO, CaCO3 etc.
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Explanation:
For example, furniture, books and TV are in the shape of a rectangular box. This shape is a cuboid. On the other hand, objects such as ice, dice and Rubik's cube are examples of another 3D shape called a cube. As a matter of fact, a cube is a special type of cuboid in which all sides are squares and identical
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