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Explain me plzzzz.....

Answer» E know that, when NaOH REACTS with salts so it form unstable hydroxide REACTION:- HgCl2+ 2NAOH -----> 2Nacl + Hg(OH)2Hg(OH)2 -----> HgO (yellow precipitate) + H2OHgI2 + 2KI ----> K2 [HgI4](red) K2HgI4 ------> 2KI + Hg + I2 (violet) hence, (B) option is correct


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