Metals and Non-metals Test

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Metals and Non-metals Test - 10

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Weekly Quiz Competition

Question 1
1 / -0

Food cans are coated with tin and not with zinc because:

A
Zinc is less reactive than tin.

B
Zinc is more reactive than tin.

C
Zinc is costlier than tin.

D
Zinc has a higher melting point than that of tin.

Solution

Food cans are coated with tin and not zinc because zinc is more reactive than tin. If food cans are coated with zinc, zinc may react with food items and make them unfit for human consumption.
Question 2
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Which one is not used for reduction?

A
Coke

B
Aluminium

C
Electrolysis

D
None of these

Solution

Coke, aluminium as well as electrolysis are used for reduction.
Question 3
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Monoclinic is the:

A
Isotope of sulphur

B
Ore of sulphur

C
Allotrope of sulphur

D
Isobar of sulphur

Solution

One of the crystalline S₈ ring allotropes of sulphur is known as the monoclinic or β-form of sulphur.
Question 4
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Non-metals do not replace hydrogen from acids because:

A
They are less reactive than hydrogen.

B
None of these

C
They are more reactive than hydrogen.

D
Non-metal being acceptors of electrons don’t provide free electrons and hence do not replace hydrogen from acids.

Solution

Non-metals are electronegative. They do not provide free electrons. Hence they do not replace hydrogen from acids.
Question 5
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Statement A: Many compounds containing sulphur are used as medicines.

Statement B: Cast iron contains 3-5% carbon.

A
Both the statements are true.

B
Both the statements are false.

C
Statement A is true; statement B is false.

D
Statement A is false; statement B is true.

Solution

Both the statements are true. Cast iron contains 3-5% carbon. Many compounds containing sulphur are used as medicines. Sulphur and sulphur containing compounds are one of the oldest antimicrobial substances in clinical use.

Question 6

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Match the following with the correct response:

(1) Liquid metal	(A) Silver
(2) Best conductor of heat	(B) Sodium
(3) Poorest conductor of heat	(C) Lead
(4) Metal that can be cut with a knife	(D) Mercury

1-B, 2-D, 3-A, 4-C

1-A, 2-C, 3-B, 4-D

1-D, 2-A, 3-C, 4-B

1-C, 2-B, 3-D, 4-A

Solution

Mercury is a liquid at room temperature. It is used in making thermometers. The best conductor of heat and electricity is silver. Lead is a poor conductor of heat. Sodium is so soft that it can be cut with a knife.

Question 7
1 / -0

Match the following with the correct response:

(1) Calcination (A) Reduction by carbon

(2) Roasting (B) Absence of air

(3) Smelting (C) Exothermic

(4) Thermite reaction (D) Excess of air

A
1-C, 2-B, 3-D, 4-A

B
1-D, 2-A, 3-C, 4-B

C
1-A, 2-C, 3-B, 4-D

D
1-B, 2-D, 3-A, 4-C

Solution

Calcination involves heating in absence of air to remove volatile matter from an ore such as dolomite. In roasting, the ore is heated in a regular supply of air in a furnace at a temperature below the melting point of the metal. Oxide ores, such as iron ore, are smelted with carbon, which serves as a fuel and changes the ore into a reduced metal. A large amount of heat is released in a thermite reaction and a temperature of about 3500°C is attained which is enough to weld broken metallic parts.
Question 8
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Match the following with the correct response:

(1) Bauxite (A) Silver

(2) Hematite (B) Iron

(3) Galena (C) Aluminium

(4) Argentite (D) Lead

A
1-C, 2-B, 3-D, 4-A

B
1-B, 2-D, 3-A, 4-C

C
1-D, 2-A, 3-C, 4-B

D
1-A, 2-C, 3-B, 4-D

Solution

Bauxite is an ore of aluminium. Hematite is an ore of iron. Galena, also called lead glance, is the natural mineral form of lead(II) sulphide. Argentite is an ore of silver.

Question 9

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Match the following with the correct response:

(1) Enrichment of ore	(A) Froth floatation process
(2) Extraction of metals	(B) Reduction by carbon
(3) Conversion of oxide form to the metallic form	(C) Roasting
(4) Refining of metals	(D) Electrolysis

1-A, 2-C, 3-B, 4-D

1-C, 2-B, 3-D, 4-A

1-B, 2-D, 3-A, 4-C

1-D, 2-A, 3-C, 4-B

Solution

Froth floatation process is a process employed for the concentration or enrichment of a sulphide ore. Roasting is used for the conversion of ore to metal oxide. Reduction by carbon is used for the conversion of oxide to the metallic form. Electrolysis is employed for the refining of metal like copper.

Question 10
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Match the following with the correct response:

(1) Bronze (A) Iron

(2) Stainless steel (B) Aluminium

(3) Solder (C) Tin and lead

(4) Duralumin (D) Copper

A
1-D, 2-A, 3-C, 4-B

B
1-A, 2-C, 3-B, 4-D

C
1-B, 2-D, 3-A, 4-C

D
1-C, 2-B, 3-D, 4-A

Solution

Bronze is an alloy of copper. Stainless steel is an alloy of iron. Solder - an alloy of tin and lead - is used to join metals for electrical work. Duralumin is an alloy of aluminium.

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Re-Attempt Weekly Quiz Competition

(1) Calcination	(A) Reduction by carbon
(2) Roasting	(B) Absence of air
(3) Smelting	(C) Exothermic
(4) Thermite reaction	(D) Excess of air

(1) Bauxite	(A) Silver
(2) Hematite	(B) Iron
(3) Galena	(C) Aluminium
(4) Argentite	(D) Lead

(1) Bronze	(A) Iron
(2) Stainless steel	(B) Aluminium
(3) Solder	(C) Tin and lead
(4) Duralumin	(D) Copper

Metals and Non-metals Test - 10

Result

Metals and Non-metals Test - 10

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Rank

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SHARING IS CARING

Question 1

Zinc is less reactive than tin.

Zinc is more reactive than tin.

Zinc is costlier than tin.

Zinc has a higher melting point than that of tin.

Solution

Question 2

Coke

Aluminium

Electrolysis

None of these

Solution

Question 3

Isotope of sulphur

Ore of sulphur

Allotrope of sulphur

Isobar of sulphur

Solution

Question 4

They are less reactive than hydrogen.

None of these

They are more reactive than hydrogen.

Non-metal being acceptors of electrons don’t provide free electrons and hence do not replace hydrogen from acids.

Solution

Question 5

Both the statements are true.

Both the statements are false.

Statement A is true; statement B is false.

Statement A is false; statement B is true.

Solution

Question 6

1-B, 2-D, 3-A, 4-C

1-A, 2-C, 3-B, 4-D

1-D, 2-A, 3-C, 4-B

1-C, 2-B, 3-D, 4-A

Solution

Question 7

1-C, 2-B, 3-D, 4-A

1-D, 2-A, 3-C, 4-B

1-A, 2-C, 3-B, 4-D

1-B, 2-D, 3-A, 4-C

Solution

Question 8

1-C, 2-B, 3-D, 4-A

1-B, 2-D, 3-A, 4-C

1-D, 2-A, 3-C, 4-B

1-A, 2-C, 3-B, 4-D

Solution

Question 9

1-A, 2-C, 3-B, 4-D

1-C, 2-B, 3-D, 4-A

1-B, 2-D, 3-A, 4-C

1-D, 2-A, 3-C, 4-B

Solution

Question 10

1-D, 2-A, 3-C, 4-B

1-A, 2-C, 3-B, 4-D

1-B, 2-D, 3-A, 4-C

1-C, 2-B, 3-D, 4-A

Solution

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