Metals and Non- Metals Test

Result

Metals and Non- Metals Test - 4

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Weekly Quiz Competition

Question 1
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Directions For Questions

Read the statements given below and select the correct option.

...view full instructions

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

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 3
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 √ √

A
I is copper; II is sulphur

B
II is sulphur; III is coal

C
III is iron; IV is copper

D
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 4
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 5
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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 6

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 7
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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
(a) – (i), (b) – (ii), (c) – (iii), (d) – (iv)

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

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

D
(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 8
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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 9
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).

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Re-Attempt Weekly Quiz Competition

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

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

Metals and Non- Metals Test - 4

Result

Metals and Non- Metals Test - 4

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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

evolution of O2 gas

evolution of H2 gas

evolution of SO2 gas

evolution of CO2 gas

Solution

Question 3

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 4

Ag > Mg > Zn > Cu

Cu > Zn > Ag > Mg

Zn > Cu > Mg > Ag

Mg > Zn > Cu > Ag

Solution

Question 5

Mg + CuSO4 → MgSO4 + Cu

Ca + MgSO4 → CaSO4 + Mg

Fe + ZnSO4 → FeSO4 + Zn

Both (2) and (3)

Solution

Question 6

(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 7

(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 8

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 9

Mg

S

P

C

Solution

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evolution of O₂ gas

evolution of H₂ gas

evolution of SO₂ gas

evolution of CO₂ gas

Mg + CuSO₄ → MgSO₄ + Cu

Ca + MgSO₄ → CaSO₄ + Mg

Fe + ZnSO₄ → FeSO₄ + Zn