Qualitative Ana...

The aqueous solution of the following salts will be coloured?

The reagents, NH₄Cl and aqueous NH₃ will precipitate

Which compound does not dissolve in hot dilute HNO₃?

An aqueous solution of FeSO₄, Al₂(SO₄)₃ and chrome alum is heated with excess of Na₂O₂ and filtered. The materials obtained are

The only cations present in a slightly acidic solution are Fe³⁺, Zn²⁺ and Cu²⁺. The reagent that when added in excess to this solution would identify and separate Fe³⁺ in one step is

Which of the following statement is correct?

A metal (X) on heating in nitrogen gas gives (Y). (Y) on treatment with H₂O gives a colourless gas which when passed through CuSO₄ solution gives a blue colour. (Y) is       

The phenomenon in which white transparent crystal changes into white powder is called

A gas (X) is passed through water to form a saturated solution. The aqueous solution on treatment with the AgNO₃ gives a white ppt. The saturated aqueous solution also dissolves magnesium aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas (Y).

Identify (X) and (Y)