A chemist opened a couborad and found four bottles contaning water solutions, each of which had lost its label. Bottles 1,2,3 contained colourless solutions, while bottle 4 contained a blue solution. The lables from the bottles were lying scattered on the floor of the cupboard. They were:
Copper (II) sulphate," "Hydrochloric acid
Lead nitrate," "Sodium carbonate
By mixing samples of the contents of the bottles, in pairs the chemist made the following observations:
`{:("Bottle +1 Bottle" 2 rarr, "White precipitate is formed"),("Bottle 1+ Bottle"3 rarr,"White precipitate is formed"),("Bottle 1+ Bottle" 4rarr,"White precipitate is formed"),("Bottle2+ Bottle"3rarr,"Colourless and odourless gas is evolved"),("Bottle 2+ Buttel" 4rarr,"No visivle reaction is observed"),("Bottle 3+ Bottle" 4rarr,"Blue precipitate is formed"):}`
With the help of the above observations answer the following questions.
Which of the following statements is correct for salts contained in bottle 1 and 4?

Options

A. Bottle 4 gives white precipitate with excess of KI solution.
B. Bottle 4 gives white precipitate with excess of `K_(4)[Fe(CN)_(6)]` solution
C. Bottle 1 and 4 both gives precipitate with excess of `NaOH` solution.
D. Bottle 1 gives white precipitate with concentrated HCI solution.

Answer

A

Explanation

Bottle `4 rArr CuSO_(4)`, Bottle `2+` Bottle 3 `rarr HCI + Na_(2)CO_(3)`
Bottle `1 rArr Pb(NO_(3))_(2)`, Bottle `+1` Bottle `4 rArr PbSO_(4) darr`
Bottle `2 rArr HCI`, Bottle `3 rArr Na_(2)CO_(3)`
(Since, HCI doesn't react with `CuSO_(4))`