MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

Iron II Oxide

When a metal ...

Question

When a metal rod $M$ is dipped into an aqueous colourless concentrated solution of $A g N O_{3}$ , the solution turns light blue. Addition of aqueous $N a C l$ to the blue solution gives a white precipitate O. Addition of aqueous $N H_{3}$ dissolves $O$ and gives an intense blue solution.
The metal rod $M$ is

A

F e

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

C u

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

N i

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

C o

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $C u$
The metal rod $M$ is $C u$ .
$C u (M) + 2 A g N O_{3} \to C u (N O_{3})_{2} blue + 2 A g$

Suggest Corrections

thumbs-up

4

Similar questions

Q. When a metal rod

M

is dipped into an aqueous colourless concentrated solution of

A g N O_{3}

, the solution turns light blue. Addition of aqueous

N a C l

to the blue solution gives a white precipitate O. Addition of aqueous

N H_{3}

O

and gives an intense blue solution.
The final solution contains:

Q. Addition of aqueous

{N H}_{3}

to the solution of copper sulphate gives a blue solution due to:

Q. An aqueous blue coloured solution of a transition metal sulphate reacts with

H_{2} S

to give a black precipitate. The black precipitate dissolves in

50 %

nitric acid forming a blue coloured solution. The blue solution on treatment with

K I

in weekly acidic medium turns yellow brown and produce a white precipitate. The cation of blue coloured solution is :

Q. Colourless solid (A)

△ ⟶

(B) (gas) + (C) (gas). Aqueous solutions of (A) and (B) turn blue litmus red, while that of (C) turns red litmus blue. Aqueous solutions of (A) and (B) also give white precipitate with

A g N O_{3}

solution, which is soluble in aqueous solution of (C). (A), (B) and (C) in correct order are :

A black colored compound (A) on reaction with

d i l . H_{2} S O_{4}

gives a gas (B) which on passing in a solution of acid (C) gives white turbidity (D). Gas (B) when passed in an acidified solution of a compound (E) gives a black precipitate (F) which is soluble in hot concentrated (C). After boiling this solution when an excess of ammonia solution is added, a blue-colored compound (G) is formed. To the solution of (E), on the addition of acetic acid and aqueous potassium ferrocyanide, a chocolate brown precipitate (H) is formed. On the addition of an aqueous solution of

B a C l_{2}

to an aqueous solution of (E), white precipitate insoluble in

H N O_{3}

The gas (B) on passing through an acid (C) gives white turbidity (D) because :

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Compounds of Iron

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon