A solution of salt in `HCl` when diluted with excess of water turns milky. It indicates the presence of

An orange precipitate of group II is dissolve in conc HCI the solution when treated with excess of water turn milky due to formation of

Statement-1 :A solution of BiCl_(3) in concentrated HCl when diluted with water gives white precipitate. Statement-2 : BiCl_(3) forms insoluble BiO^(+)Cl^(-) when diluted with a large quantity of water.

When air is blown from mouth into a test - tube containing lime water, the lime water turned milky due to the presence of

(i) A white solid mixture of two salts containing a common cations in insoluble in water. It dissolves in dilute HCl producing some gases (with effervescence) that turn an acidified dichromate solution gren. After the gases are passed through the acidified dichromate solution, the emerging gas turns baryta water milky. (ii) On treatment with dilute HNO_(3) , the white solid gives a solution which does not directly give a precipitate with a BaCl_(2) solution but gives a white precipitate when warmed with H_(2)O_(2) and then treated with a BaCl_(2) solution. (iii) The solution of the mixture in dilute HCl, when treated with NH_(4)Cl,NH_(4)OH and an Na_(2)HPO_(4) solution, gives a white precipitate. Q. The white precipitate obtained in (ii) indicates the presence of a:

An orange red precipitate obtained by passing H_(2)S through an acidified solution of an inorganic salt indicates the presence of

This gas turns lime water milky.

The presence of E. coli in water indicates

State the colour change in three different indicators in presence of HCl gas.

Presence of Tubifex in water body indicates its

An aqueous solution of CoCl_2 on addition of excess of concentrated HCl turns blue due to formation of