Which of the following reactions will not occur? Why not? (a) M g S O 4 a q + C u ( s ) → C u S O 4 ( a q ) + M g ( s ) (b) C u S O 4 ( a q ) + F e ( s ) → F e S O 4 ( a q ) + C u ( s ) (c) M g S O 4 ( a q ) + F e ( s ) → F e S O 4 ( a q ) + M g ( s )

The reaction MgSO 4 aq + Cu ( s ) → CuSO 4 ( aq ) + Mg ( s ) will not occur because copper ( C u ) is less reactive than magnesium ( M g ). It cannot displace magnesium from its salt solution. The reaction MgSO 4 ( aq ) + Fe ( s ) → FeSO 4 ( aq ) + Mg ( s ) will also not occur because iron ( F e ) is less reactive than magnesium ( M g ) . So, iron cannot replace magnesium from magnesium sulphate solution.

Samples of four metals A, B, C, and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows. Metal Iron(II) sulphate Copper(II) Sulphate Zinc sulphate Silver nitrate A No reaction Displacement B Displacement No reaction C No reaction No reaction No reaction Displacement D No reaction No reaction No reaction No reaction Use the Table above to answer the following question about metals: A , B , C , and D . Arrange the metals A , B , C , and D in the order of decreasing reactivity

From the given table we can write the following observations: 1) A is less reactive than F e but more reactive than C u . 2) B is more reactive than F e but less reactive than Z n . 3) C is more reactive than A g but less reactive than F e , C u a n d Z n . 4) D is less reactive than F e , C u , Z n , A g . B > A > C > D is the order of reactivity.

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The metal that does not displace hydrogen from an acid is _____ .

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Important Questions on Metallurgy

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be-

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

You are given a solution of

{A g N O}_{3}

. Which of the following do you think cannot displace

A g

from

{A g N O}_{3}

solution?

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

Give one example, with equation, of the displacement of hydrogen by a metal from an acid.

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

State and explain the reactions, if any, of the following metals with a solution of copper sulphate:

(a) Gold

(b) Copper

(d) Mercury

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

Which of the following reactions will not occur? Why not?
(a)

M g S O_{4} (a q) + C u (s) \to C u S O_{4} (a q) + M g (s)

(b)

{C u S O}_{4} (a q) + F e (s) \to {F e S O}_{4} (a q) + C u (s)

(c)

M g S O_{4} (a q) + F e (s) \to F e S O_{4} (a q) + M g (s)

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

The most reactive metal among the following is:

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

Samples of four metals A, B, C, and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.

Metal	Iron(II) sulphate	Copper(II) Sulphate	Zinc sulphate	Silver nitrate
A	No reaction	Displacement
B	Displacement		No reaction
C	No reaction	No reaction	No reaction	Displacement
D	No reaction	No reaction	No reaction	No reaction

Use the Table above to answer the following question about metals:

A, B, C,

and

D .

Arrange the metals

A, B, C,

and

D

in the order of decreasing reactivity

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

What will happen if a strip of copper is kept immersed in a solution of silver nitrate

({A g N O}_{3})

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

Which one of the following four metals would be displaced from the solution of its salt by the other three metals?

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

You are given samples of three metals — sodium, magnesium, and copper. Suggest any two activities to arrange them in order of their decreasing reactivity.

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

{C u S O}_{4} (a q) + F e (s) ⟶ {F e S O}_{4} (a q) + C u (s)

F e S O_{4} (a q) + Z n (s) ⟶ Z n S O_{4} (a q) + F e (s)

On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

A zinc plate was kept in a glass container with having

{C u S O}_{4}

solution. On examination it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give a chemical equation of the reaction involved.

EASY

Science>Chemistry>Metallurgy>Reactivity series of metals

In a solution of lead acetate, a strip of metal

M

was dipped. After sometimes, lead from the solution was deposited on the metal strip. Which metal is more reactive,

M

or lead?

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.

EASY

Science>Chemistry>Metallurgy>Reactivity series of metals

The least reactive metal among the following is:

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

How would you show that silver is chemically less reactive than copper?

HARD

Science>Chemistry>Metallurgy>Reactivity series of metals

A copper plate was dipped in

{A g N O}_{3}

solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

In nature, metal

A

is found in a free state, while metal

B

is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?

MEDIUM

Science>Chemistry>Metallurgy>Reactivity series of metals

Name two metals which do not get corroded.

The metal that does not displace hydrogen from an acid is _____ .

Important Questions on Metallurgy

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