Chemistry
13.The World Between Wars 1900-1950:Part-1
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1.Heat
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2.Chemical Reactions and Equations
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3.Reflection of light by different surfaces
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4.Acids,Bases and Salts
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5.Refraction of Light at Curved Surfaces
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6.Refraction of Light at Curved Surfaces
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7.Human Eye and Colourful World
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12.Electromagnetism
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13.Principles of Metallurgy
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14.Carbon and its compounds
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