A solution of a salt in water on addition of dilute `HCL` gives a white ppt. solution in hot water. The salt contains:

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, 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, 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:

A solution of a colourless salt in conc. HCl on dilution with water gives white ppt. it is due to

The addition of dilute NaOH to Cr^(3+) salt solution will give :