Chemistry

This chapter covers topics such as Types of Plastics, Types of Synthetic Fibres, Classification of Polymers on the Basis of Structure, Plastics, Synthetic Fibres, Characteristics of Synthetic Fibres, and Plastics and the Environment.

This chapter covers topics such as Physical Properties of Metals, Chemical Properties of Metals, Uses of Metals and Non-metals, Chemical Properties of Non-metals, Physical Properties of Non-metals, and Alloys.

This chapter covers topics such as Conservation of Natural Resources, Coal, Formation of Coal, Petroleum, Natural Resources, Natural Gas, and Alternate Sources of Energy.

This chapter covers topics such as Fuel, Fuel Efficiency, Flame, Structure of a Flame, Combustion, Types of Combustion, Controlling of Fire, Greenhouse Effect, Acid Rain, and Pollution Caused by Burning Fuels.

The chapter covers topics such as Mixture, Solutions,Suspensions and Colloids, Separating the Components of a Mixture and Physical and Chemical Changes etc.

The chapter covers topics such as Bohr's Model, Limitations of Bohr's Atomic Model, Sommerfeld's Extension of Bohr's Theory and Dual Nature of Electron- De Broglie Theory etc.

The chapter covers topics such as Laws of Chemical Combination, Atom, Molecule and Writing Chemical Formulae etc.