How do Metal React with Solution of Other Metal Salts

Q.

Why does gold and silver do not corrode?

Q.

When an iron nail is placed in copper sulphate solution, we observe colour changes whereas when copper wire is placed in iron sulphate solution, we observe no change in colour. What is the reason behind this change in the test tube?

1. Copper is more reactive than iron.

2. Iron is more reactive than copper.

3. Melting point of iron is higher than copper.

4. Melting point of copper is higher than iron.

Q.

Name the metal which can displace hydrogen from water.

Q. Sodium is less reactive than copper.

1. True
2. False

Q.

Why does copper vessel acquire green coating in rainy season?

Q.

Identify the type of chemical reaction taking place: On heating green color ferrous sulfate crystals, a reddish-brown solid is left and the smell of gas has the odor of burning Sulphur is experienced.

Q.

A student prepared an aqueous solution of CuSO₄ in beaker X and an aqueous solution of FeSO₄ in beaker Y. He then dropped some iron pieces in beaker X and some zinc pieces in beaker Y. After about 10 hours, he observed that the solution in X and Y respectively appear:

1. Colourless and pale green

2. Colourless and light blue

3. Greenish and colourless

4. Blue and green

Q.

Give a reason for the following: Iron is rendered passive with fuming nitric acid.

Q.

A student added a piece of zinc metal to four test tubes I, II, III and IV which respectively contain an aqueous solution of aluminium sulphate, zinc sulphate, ferrous sulphate and copper sulphate. In which solution, he observed that the reaction has taken place.

1. (I), (II)

2. (II), (III)

3. (III), (IV)

4. (I), (IV)

Q.

A compound X on heating produce a colorless gas Y and metal oxide Z. The metal oxide is yellow when hot and show white color when it is cooled. Identify X, Y and Z?

1. $\mathrm{X}={\mathrm{ZnCO}}_3,\mathrm{Y}={\mathrm{CO}}_2,\mathrm{Z}=\mathrm{ZnO}$

2. $\mathrm{X}={\mathrm{CaCO}}_3,\mathrm{Y}={\mathrm{CO}}_2,\mathrm{Z}=\mathrm{CaO}$

3. $\mathrm{X}={\mathrm{AgNO}}_3,\mathrm{Y}={\mathrm{NO}}_2,\mathrm{Z}=\mathrm{AgO}$

4. $\mathrm{X}={\mathrm{CuSO}}_4,\mathrm{Y}={\mathrm{SO}}_2,\mathrm{Z}=\mathrm{CuO}$

Q.

When a reddish brown metal X comes in contact with air and moisture, it forms a green covering of metal carbonate over the metal X. What is X?

1. Iron

2. Copper

3. Zinc

4. Aluminium

Q.

The image shows iron nail dipped in a copper sulfate solution. Reaction takes place and sometime later, iron sulfate is observed in the solution. If we replace the iron nail with the gold nail similar changes will be observed.

1. True

2. False

Q. Shown below is the reactivity series of metals. Which of the following option is correct regarding it?

1. Sodium is more reactive than magnesium.
2. Magnesium and aluminium metals displace calcium.
3. Silver and copper metals displace lead.
4. Iron and tin metals can displace magnesium.

Q.

Name a carbonate which gives yellow residue on heating but the residue turns white on cooling.

Q.

The diagram given below is to prepare Iron (III) chloride in the laboratory:

Write the equation for the reaction between iron and chlorine.

1. 

2. 

3. 

4. 

Q.

Why it is advisable to freshly prepare Ferrous sulphate solution for experiments?

Q.

A Metal (A), that is above in the reactivity series than a Metal (B), can displace Metal (B) from its salt solution.

1. True

2. False

Q.

Identify the possible reaction

$\mathrm{Zn}+{\mathrm{CuSO}}_4\to {\mathrm{ZnSO}}_4+\mathrm{Cu}$

Q. Select the options that shows the correct arrangement of metals in the order of decreasing reactivity.​

1. Zn > Fe > Cu > Ag ​
2. Fe > Cu > Zn > Ag​
3. Ag > Zn > Fe > Cu​
4. Cu > Fe > Zn > Ag ​

Q. Match the following reactions in column 1 with the correc type given in column 2.
Column 1 Column 2

${\text{a. Fe}}^{2+}\to {\text{Fe}}^{3+}+e^{-}$	(i) Decomposition
$b.2AgBr\left(s\right)\to 2Ag\left(s\right)+B{r}_2\left(g\right)$	(ii) Reduction
$c.2Mg\left(s\right)+O_2\left(g\right)\to 2MgO\left(s\right)$	(iii) Oxidation
${\text{d. Mg}}^{2+}+2e^{-}\to \text{Mg}\left(s\right)$	(iv) Combination

1. a-(ii), b-(iv), c-(i), d-(iii)
2. a-(ii), b-(i), c-(iv), d-(iii)
3. a-(iii), b-(i), c-(iv), d-(ii)
4. a-(iii), b-(iv), c-(i), d-(ii)

Q.

Metal A + Salt solution of Metal B $\to$ Salt solution of Metal A + Metal B
(Assume Metal A is higher in the reactivity series than B).

1. True

2. False

Q. ntIs tin a part of the reactivity series also known as activity series ?n

Q. How will you prepare the following?
Zinc carbonate form zinc oxide.

Q.

A, B, C are three elements that undergo chemical reactions according to the following equations:

${\mathrm{A}}_2{\mathrm{O}}_3+2\mathrm{B}\to {\mathrm{B}}_2{\mathrm{O}}_3+2\mathrm{A}$

$3{\mathrm{CSO}}_4+2\mathrm{B}\to {\mathrm{B}}_2{\left({\mathrm{SO}}_4\right)}_3+3\mathrm{C}$

$3\mathrm{CO}+2\mathrm{A}\to {\mathrm{A}}_2{\mathrm{O}}_3+3\mathrm{C}$

Now answer the following questions:

Arrange these elements in the order of reactivity series.

Q.

What will you observe when caustic soda solution is added to a solution of ferric sulphate.

Q.

Among the following, the rate of formation of bubbles, when it is reacted with acid, is fastest in case of _________.

1. Fe

2. Mg

3. Al

4. Zn

Q. Which of the following metals is less reactive than hydrogen?

1. Cu
2. Na
3. Mg
4. Pb

Q. State the rule that governs the displacement of a metal from its salt solution by another metal.

Q. Q By which conditions we define that these are highley reactive these are low reactive K>Ba>Na>Ca>Mg>Al>Zn>Cr>Fe>Cd>Co>Ni>Sn>Pb>H>Cu>Hg>Ag>Au>Pt and how they are defined to be in series

Q.

Beakers A, B, and C contain zinc sulphate, silver nitrate, and ferrous sulphate solutions respectively. Copper pieces are added to each beaker. Blue colour will appear in case of:

1. All the beakers

2. Beaker C

3. Beaker B

4. Beaker A