Formalin ke do mukhya upyog ka warnan kare
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Answer= Mention two important uses of formalin. (i) It is used for the preservation of biological species. (ii) It is used in the manufacture of synthetic polymers like bakelite and synthetic dye stuffs like indigo.
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Mention two important uses of formalin. (i) It is used for the preservation of biological species. (ii) It is used in the manufacture of synthetic polymers like bakelite and synthetic dye stuffs like indigo.
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