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Simple definition of Mesomeric effect

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 Mesomeric effect can be define as permanent shifting of pi (π) electron towards  Multiple bond to atom Multiple bond to single bond Lone pair to single bond • Double–single–double • Double–single–positive  • Double–single–negative • Double–single–lone pair • Double–single–free radicals
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Plane mirror

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           Plane mirror are used in various activities in our day to day life. A mirror is made by coating the back surface of a flat and smooth glass piece with a thin, reflecting film of aluminium or silver. To protect this reflecting film and to make that side opaque, another coat of a substance like lead oxide is given over it. 
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How Lonar lake was formed?

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  Lonar Lake  was created by a meteorite collision impact during the Pleistocene Epoch. It is one of the four known, hyper-velocity, impact craters in basaltic rock anywhere on Earth. The other three basaltic impact structures are in southern Brazil.
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Location: Lonar Lake, Maharashtra 443302
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