Which of the following statements is/are incorrect   (I) Filter paper moistened with cad .
Channel: Doubtnut
Date: 2020-04-12

Which of the following statements is/are incorrect   (I) Filter paper moistened with cadmium acetate and lead acetate turn black and yellow respectively, when brought in contact with `H_(2)S` gas.   (II) Sulphites in presence of Zinc, reacts with dilute `H_(2)SO_(4)` to liberate `H_(2)S` gas.   (III) Stability of carbonates decrease with increasing metallic character.   (IV) Borax bead test is responded generally by p and d block metal salts.   (V) Sodium chloride on heating with aqueous solution of `K_(2)Cr_(2)O_(7)` and concentrated `H_(2)SO_(4)` produced white fumes.