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Cathode rays
Video QuizDiscovery of cathode rays , nature of cathode rays and Properties of cathode rays
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Atomic emission spectra
Video QuizLine spectrum , Bohr's explanation .
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Acids and bases
Video QuizArrhenius model of acid and base Bronsted - Lowery model of acid and base Short coming of Arrhenius model
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Relative speed
Video QuizMotion of two cars in the same direction Motion of 2 cars in opposite direction. Relative speed
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density of matters
Video QuizDensity meaning rule of density unit density application in our daily life
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Atomic construction
Video QuizDefine atom Structure of atom Atomic mass and atomic number Symbols of some elements.