Metals and Non- Metals Test

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Metals and Non- Metals Test - 7

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Weekly Quiz Competition

Question 1
1 / -0

Read the statements given below and select the correct option.
Statement - 1: Lemon pickle can be stored in an aluminium jar.
Statement - 2: Aluminium jars enhance the storage life of a pickle.

A
Both statements 1 and 2 are true and statement - 2 is the correct explanation of statement - 1.

B
Both statements 1 and 2 are true but statement - 2 is not the correct explanation of statement - 1.

C
Statement - 1 is true and statement - 2 is false.

D
Both statements 1 and 2 are false.

Solution

This is because of the fact that lemon pickle is acidic in nature and aluminium is a metal, so it reacts with the acid and liberate hydrogen gas. Therefore, formation of holes in the vessel takes place.
Question 2
1 / -0

Identify materials 'X' and 'Y' in the figure given below.

A

X Y

Aluminium foil Pencil lead

B

X Y

Pencil lead Copper block

C

X Y

Pencil lead Wooden block

D

X Y

Copper block Pencil lead

Solution

X Y

Pencil lead Wooden block

This is because, pencil lead is made up of graphite which is a good conductor of electricity (thus the blub glows in X side), whereas wood is a bad conductor of electricity (thus the bulb does not glow in Y side).
Question 3
1 / -0

A metal piece is dropped in a test tube containing dilute H₂SO₄. When a burning matchstick is brought near the mouth of the test tube, a pop sound is heard. The sound is produced due to the

A
evolution of O₂ gas

B
evolution of H₂ gas

C
evolution of SO₂ gas

D
evolution of CO₂ gas

Solution

When a burning matchstick is brought near the mouth of the test tube, containing a metal piece dipped in dilute H₂SO₄, a pop sound is heard due to the evolution of hydrogen gas.

Question 4

1 / -0

Study the following table carefully and select the correct option.

Material	Reacts with dilute hydrochloric acid	Reacts with dilute sulphuric acid
X	Yes	Yes
Y	No	No
Z	No	No

X Y Z

S Na K

X Y Z

Na Cu S

X Y Z

K Na Cu

X Y Z

S K Na

Solution

Sodium, being a highly reactive metal, reacts with both dilute hydrochloric acid and sulphuric acid.
Copper does not react with dilute sulphuric acid and hydrochloric acid and cannot liberate hydrogen because copper is placed lower in the reactivity series than hydrogen.
Sulphur is a non-metal and non-metals do not react with acids. Thus, option (2) is completely correct.

Question 5

1 / -0

Study the following table carefully and select the correct option.

Sample	Conductor of electricity	Malleability
I	√	X
II	X	X
III	X	√
IV	√	√

I is copper; II is sulphur

II is sulphur; III is coal

III is iron; IV is copper

II is coal; IV is copper

Solution

From the given options, option (4) is correct, as coal (sample II) is neither a conductor of electricity nor possesses the property of malleability and copper (sample IV) is a good conductor of electricity and malleable.

Question 6
1 / -0

Which of the following is the most appropriate order for the reactivity of metals towards mineral acids?

A
Ag > Mg > Zn > Cu

B
Cu > Zn > Ag > Mg

C
Zn > Cu > Mg > Ag

D
Mg > Zn > Cu > Ag

Solution

The most appropriate order for the reactivity of metals towards mineral acids is Mg > Zn > Cu > Ag.
Question 7
1 / -0

Which of the following reactions cannot occur?

A
Mg + CuSO₄ MgSO₄ + Cu

B
Ca + MgSO₄ CaSO₄ + Mg

C
Fe + ZnSO₄ FeSO₄ + Zn

D
Both (2) and (3)

Solution

The reaction given in option (3) cannot occur. This is because iron (Fe) is less reactive than zinc (Zn), thus it cannot displace zinc from its salts.

Question 8

1 / -0

Match column - I with column - II and select the correct option from the codes given below.

Column - I	Column - II
(a) A non-metal essential for respiration	(i) Carbon
(b) A non-metal which is a source of energy in the sun	(ii) Silicon
(c) A non-metal which is a good conductor of electricity	(iii) Oxygen
(d) A non-metal used in semiconductors	(iv) Hydrogen

(a) – (iii), (b) – (iv), (c) – (i), (d) – (ii)

(a) – (i), (b) – (ii), (c) – (iv), (d) – (iii)

(a) – (ii), (b) – (iii), (c) – (i), (d) – (iv)

(a) – (iv), (b) – (i), (c) – (iii), (d) – (ii)

Solution

Column - I	Column - II
(a) A non-metal essential for respiration	Oxygen
(b) A non-metal which is a source of energy in the sun	Hydrogen
(c) A non-metal which is a good conductor of electricity	Carbon
(d) A non-metal used in semiconductors	Silicon

Question 9

1 / -0

Match column - I with column - II and select the correct option from the codes given below.

Column - I	Column - II
(a) Mercury	(i) Acidic oxide
(b) CO₂	(ii) Liquid metal
(c) Gold	(iii) Basic oxide
(d) MgO	(iv) Malleable

(a) – (i), (b) – (ii), (c) – (iii), (d) – (iv)

(a) – (ii), (b) – (i), (c) – (iv), (d) – (iii)

(a) – (iv), (b) – (ii), (c) – (iii), (d) – (i)

(a) – (ii), (b) – (i), (c) – (iii), (d) – (iv)

Solution

Column - I	Column - II
(a) Mercury	Liquid metal
(b) CO₂	Acidic oxide
(c) Gold	Malleable
(d) MgO	Basic oxide

Question 10
1 / -0

What will happen if you keep a solution of copper sulphate in an iron container for a few days? What is the reason for your observation?

A
The surface of the iron container develops a black layer due to corrosion caused by copper sulphate.

B
Copper metal will be deposited in the iron container since copper is more reactive than iron.

C
Nothing will happen since no reaction takes place between copper sulphate and iron.

D
Holes will be formed in the iron container since iron is more reactive than copper and hence will displace copper from a solution of copper sulphate.

Solution

As iron is more reactive than copper, it displaces copper from a solution of copper sulphate and holes will be formed in the iron container.
Question 11
1 / -0

Lalita takes a burning substance and collects the evolved vapours in a test tube, making sure that they do not escape. A small amount of water is added to the test tube. To the solution obtained, a few drops of red litmus solution are added. The litmus solution turns blue. Which of the following could be the burning substance?

A
Mg

B
S

C
P

D
C

Solution

The burning substance will be magnesium. As magnesium is a metal, on burning it will form magnesium oxide (MgO), which is basic in nature. This is because metals form basic oxides. When red litmus solution is added to the solution obtained in the test tube, it turns blue (as litmus solution/ paper gives blue colour in basic solutions).
Question 12
1 / -0

Vidisha placed a copper wire in silver nitrate solution. After sometime, she noticed that the colour of the wire and the solution changed. What did she observe?

A
The colour of the solution turns blue and precipitates of solid silver are obtained.

B
The colour of the solution turns green and the copper wire turns blue.

C
There is no change in the colour of the solution or the colour of the wire.

D
The colour of the solution becomes silver and there is no change in the colour of the copper wire.

Solution
Question 13
1 / -0

An electrician said that proper wiring could be done due to a property of metals called ductility. What does the word 'ductile' mean?

A
Metals can be beaten into thin sheets.

B
Metals make a ringing sound when struck.

C
Metals can be drawn into thin wires.

D
Metals are able to conduct electricity.

Solution

Ductility is a mechanical property of metals due to which they can be drawn into long and thin wires without breaking.
Question 14
1 / -0

Read the following statements carefully and identify X, Y and Z, respectively.

(i) X is stored under kerosene.
(ii) Y catches fire on exposure to air and so, is stored in water.
(iii) Z reacts slowly with water.

A
Na, Mg, Cu

B
Na, P, Fe

C
Cu, Zn, K

D
Zn, Cu, Na

Solution

Sodium (X) is a highly reactive metal which catches fire on reacting with oxygen present in water. Therefore, it is kept in kerosene oil to keep it away from oxygen.

Phosphorus (Y) is a very reactive non-metal which catches fire when exposed to the atmospheric oxygen. Therefore, it is kept in water to keep it away from the atmospheric oxygen.

Iron (Z) does not clearly alter in pure water or in dry air, but when both water and oxygen are present (moist air), iron corrodes.
Question 15
1 / -0

A student investigated the reactivity of four metals; iron, copper, zinc and an unknown metal X. He arranged three experimental set-ups as shown in the diagram below.
The student observes that reaction occurred in all the three experiments. Identify the metal X.

A
Cu

B
Mg

C
Fe

D
Au

Solution

In the third experimental set-up, solution in the beaker is of zinc metal. Thus, metal which displaces it, should have higher reactivity than zinc. Thus, from all the metals given in options, only magnesium (Mg) is more reactive than zinc, so it can displace zinc from its solution.

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Re-Attempt Weekly Quiz Competition

X	Y
Aluminium foil	Pencil lead

X	Y
Pencil lead	Copper block

X	Y
Pencil lead	Wooden block

X	Y
Copper block	Pencil lead

Metals and Non- Metals Test - 7

Result

Metals and Non- Metals Test - 7

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Question 1

Both statements 1 and 2 are true and statement - 2 is the correct explanation of statement - 1.

Both statements 1 and 2 are true but statement - 2 is not the correct explanation of statement - 1.

Statement - 1 is true and statement - 2 is false.

Both statements 1 and 2 are false.

Solution

Question 2

X Y Aluminium foil Pencil lead

X Y Pencil lead Copper block

X Y Pencil lead Wooden block

X Y Copper block Pencil lead

Solution

Question 3

evolution of O2 gas

evolution of H2 gas

evolution of SO2 gas

evolution of CO2 gas

Solution

Question 4

X Y Z S Na K

X Y Z Na Cu S

X Y Z K Na Cu

X Y Z S K Na

Solution

Question 5

I is copper; II is sulphur

II is sulphur; III is coal

III is iron; IV is copper

II is coal; IV is copper

Solution

Question 6

Ag > Mg > Zn > Cu

Cu > Zn > Ag > Mg

Zn > Cu > Mg > Ag

Mg > Zn > Cu > Ag

Solution

Question 7

Mg + CuSO4 MgSO4 + Cu

Ca + MgSO4 CaSO4 + Mg

Fe + ZnSO4 FeSO4 + Zn

Both (2) and (3)

Solution

Question 8

(a) – (iii), (b) – (iv), (c) – (i), (d) – (ii)

(a) – (i), (b) – (ii), (c) – (iv), (d) – (iii)

(a) – (ii), (b) – (iii), (c) – (i), (d) – (iv)

(a) – (iv), (b) – (i), (c) – (iii), (d) – (ii)

Solution

Question 9

(a) – (i), (b) – (ii), (c) – (iii), (d) – (iv)

(a) – (ii), (b) – (i), (c) – (iv), (d) – (iii)

(a) – (iv), (b) – (ii), (c) – (iii), (d) – (i)

(a) – (ii), (b) – (i), (c) – (iii), (d) – (iv)

Solution

Question 10

The surface of the iron container develops a black layer due to corrosion caused by copper sulphate.

Copper metal will be deposited in the iron container since copper is more reactive than iron.

Nothing will happen since no reaction takes place between copper sulphate and iron.

Holes will be formed in the iron container since iron is more reactive than copper and hence will displace copper from a solution of copper sulphate.

Solution

Question 11

Mg

S

P

C

Solution

Question 12

The colour of the solution turns blue and precipitates of solid silver are obtained.

The colour of the solution turns green and the copper wire turns blue.

There is no change in the colour of the solution or the colour of the wire.

The colour of the solution becomes silver and there is no change in the colour of the copper wire.

Solution

X Y

Aluminium foil Pencil lead

X Y

Pencil lead Copper block

X Y

Pencil lead Wooden block

X Y

Copper block Pencil lead

evolution of O₂ gas

evolution of H₂ gas

evolution of SO₂ gas

evolution of CO₂ gas

X Y Z

S Na K

X Y Z

Na Cu S

X Y Z

K Na Cu

X Y Z

S K Na

Mg + CuSO₄ MgSO₄ + Cu

Ca + MgSO₄ CaSO₄ + Mg

Fe + ZnSO₄ FeSO₄ + Zn