An aqueous solution of a substance, on treatment with dilute HCl, gives a white precipitate soluble in hot water. When `H_(2)S` is passed through the hot acidic solution, a black precipitate is formed. The substance is:

An aqueous solution of a substance gives a white percipitate on treatment with dil ,HCI which dissolves on heating .When H_(2)S is passed through the hot acidic solution a black precipitate is obtained .The substances are not :

An aqueous solution of a substance gives a white precipitate on treatment with dilute HCI, which dissolves on heating. When hydrogen sulphide is passed through the hot acidic solution, a black precipitate is obtained. The substance is a:

An aqueous solution of a substance gives a white precipitate on treatment with dilute HCl, which dissolves on heating. On passing H_2S in hot acidic solution a black precipitate is formed. Identify the substance.

A solution of a salt in water, on addition of dilute HCI, gives a white precipitate, which is soluble in hot water. The salt contains

An aqueous solution of a substance gives a white percipitate on treatment with dil HCl , which dissole on heating. On passing H_(2)S in hot acidic solution a black percipitate is formed. The substance is:

An aqueous solution of a substance gives a white percipitate on treatment with dil HCl , which dissole on heating. On passing H_(2)S in hot acidic solution a black percipitate is formed. The substance is: