Showing posts with label ghar hi paathsaala घर ही पाठशाला. Show all posts
Showing posts with label ghar hi paathsaala घर ही पाठशाला. Show all posts
Monday, June 21, 2021
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1744 में Lavoisier ने experiments के basis में यह proof किया कि किसी reaction में mass conserve होता है। chemical reactions के दौरान mass न... -
change to english language combustion reaction जैसा कि हम जानते है, Combustion का मतलब जलना होता है,... -
Change to Hindi-English language In 1869, A Russian scientist D.I Mendeleev has done a well classification of elements. He no...
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