1. A​ ​white​ ​solid’A’on​ ​heating​ ​gives​ ​off​ ​a​ ​gas​ ​which​ ​turns​ ​lime​ ​water milky.The​ residue​ ​is​ ​yellow​ ​when​ ​hot​ ​but​ ​turns​ ​white​ ​on​ ​cooling​ ​.The solid​ ​A​ ​is:

Answer: Zinc Carbonate

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