25/12/2022
CBSE | CLASS XI | CHEMISTRY | CHAPTER NO. 8 | REDOX REACTIONS | LECTURE NO. 1 Redox Reaction and its application.Oxidation.Oxidizing agent/Oxidant.Reduction.Reducing agent/Reductant.
VIDYAMANTRA
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25/12/2022
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May 9th
1927 Manfred Eigen, who shared Nobel Prize (1967) with Ronald George Wreyford Norrish and George Porter for their studies of extremely fast chemical reactions, effected by disturbing the equilibrium by means of very short pulses of energy, was born.
April 26th
1775 Antoine L Lavoisier reported that heated mercury forms red calyx, HgO, while the air is reduced in volume and no longer supports combustion, heated red calyx to liberate oxygen.
April 24th
1817 Jean Charles Galissard de Marignac, the Swiss chemist, was born.
April 5th
1827 Joseph Lister, who introduced antiseptics, such as carbolic acid (phenol, C6H5OH), was born.
March 11th
1818 Henri E. Sainte-Claire Deville, the first to prepare pure aluminium, discovered toluene and anhydrous nitrogen pentoxide, was born.
March 8th
1879 The German chemist Otto Hahn was born on this day.
March 5th
1637 John van der Heyden, inventer of the fire extinguisher, was born.
March 2nd
1862 Boris Borisovich Galitzine, Russian physicist, was born.
1886 H. Jermain Creighton, researcher in electro-organic chemistry; developed industrial process for electroreduction of glucose to sorbitol and mannitol, was born.
March 1st
1896 Antoine-Henri Becquerel discovered radioactivity of uranite in pitchblende
February 28th
1901 Linus C. Pauling, researcher on structure of molecules, valency and resonance was born. The Pauling scale of electronegativity is named after him.
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5183/4, Krishan Nagar, Karol Bagh
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110005