Study the reaction scheme below and then answer which follow:

On bubbling excess of gas A through the resulting suspension, the white precipitate dissolves and then reappears on boiling, Suggest an explanation for these observations.

Study the reaction scheme below and then answer which follow: Give the chemical name and formula of (i) marble, (ii) gas 'A . (iii) solid 'B'.

A white crystalline compound (X) swells open heating and gives violet-coloured flame. Its aqueous solution gives the following reactions : (a) A white precipitate is formed, with BaCl_(2) in presence of HCl . (b) When treated with excess of NH_(4) OH , it gives white gelatinous precipitate. the white precipitate dissolves in NaOH and reappears on boiling with concentrated solution of NH_(4) Cl . ( c) It gives yellow precipitate with cobaltinitrite solution. Identify (X) and explain the reaction at steps a, b and c .

Identify the cation in each of the following case Ammonium hydroxide solution when added to the solution B gives white precipitate which dissolves in excess

Study the experimental set given below and answer the following questions : Which gas is liberated in this experiment?

Zinc(II) ion on reaction with NaOH first give a white precipitate which dissolves in excess of NaOH due to the formation of :

Identify the cation in each of the following case Ammonium hydroxide solution when added to the solution gives bluish white precipitate which dissolves in excess to give deep blue solution.

Study the extract of the Periodic Table given below and answer the questions that follow. Give the alphabet corresponding to the elements in question. DO NOT repeat an element. Which is an inert gas ?

Study the figure given below and answer the questions that follow : Name another gas which has the same property and can be demonstrated through this experiment.

A colourless crystalline salt, on being heated, gives a coloured gas with a pungent smell. On being passed through an AgNO_(3) solution, this gas forms a white precipitate insoluble in HNO_(3) but readily soluble in an NH_(3) solution. Which of the following reaction can lead to the above observation?

A white colored inorganic salt formed by an element fo group 14 give the following reactions : a. It is soluble in water and the solution has sweet taste . b. The salt when heated gives acetone and a yellow colored residue which is used in paints . c. The solution of the salt gives a white precipitate with dil HCi which is soluble in hot water . Explain the above observations with chemical reactions involved .