From `NH_(3),HCl,H_(2)S,SO_(2)-` Select : - i] The gas which when bubbled through `CuSO_(4)` soln., a deep blue coloured soln is fromed . Ii] This gas burns in oxygen with a green flame .

A metal (A) on heating in nitrogen gas given compound B.B on treatment with H_(2)O givens a colourless gas which when passed throught CuSO_(4) solution given a dark blue - violet coloured solution . A and B respectivley are :

A metal (A) on heating in nitrogen gas given compound B.B on teratement with H_(2)O givens a colourless gas which when passed throught CuSO_(4) solution given a dark blue - violet coloured solution . A and B respectivley are :

When SO_(2) is bubbled into H_(2)S gas, colloidal sol is formed. What type of colloidal sol is it ?

What happens when: CO_2 gas is bubbled through green solution of K_2MnO_4 .

A mixture of C_(2)H_(6), C_(2)H_(4) and C_(2)H_(2) is bubbled through alkaline solution of copper (I) chloride, contained in Woulf's bottle. The gas coming out is:

A metal X on heating in nitrogen gas gives Y,Y on treatment with H_(2)O gives a colourless gas which when passed through CuSO_(4) solution gives a blue colour. Y is:

The questions below refer to the following salt solutions listed A to F:- A: Copper nitrate B: Iron [II] sulphate C: Iron [III] chloride D: Lead nitrate E: Magnesium sulphate F: Zinc chloride. i) Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by barium chloride solution. [i.e. white ppt. insoluble in dil. HCI] ii) Which two solutions will give a white ppt. when treated with dil. HNO_3 & AgNO_3 soln. iii) Which soln. will give a white ppt. when either dil. HCl or dil. H_2SO_4 , is added to it. iv) Which soln. becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it. v) Which solution gives a white precipitate with excess ammonium hydroxide solution.

When dilute H_(2)SO_(4) and H_(2)O_(2) are added to a solution of chromate ions, an intense blue colour is produced, which is stable in ether. Theis is due to the formation of

A colourless inorganic compound (A) imparts a green colour to flame. Its solution does not give white precipitate with H_(2)S . Its solution gives white precipitate with conc. H_(2)SO_(4) which is insoluble in dil. H_(2)SO_(4) . When it is heated with K_(2)Cr_(2)O_(7) and conc. H_(2)SO_(4) , a red gas is evolved. The gas when passed through aqueous NaOH solution turns it Yellow. Identify the compound (A) and give chemical reactions.

An inorganic salt when heated with concentrated H_(2)SO_(4) evolves a colourless pungent smelling gas but with concentrated H_(2)SO_(4) and MnO_(2) evolves a coloured pungent smelling gas which bleaches moist litmus paper.The coloured gas is: