Materials Metals And Non-Metals Test

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Materials Metals And Non-Metals Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

On burning, metals react with oxygen to produce

A
acidic oxides

B
carbon dioxide

C
Basic oxides

D
nitric oxide

Solution

Metallic oxides are basic and dissolve in water to form a base.
The solution formed turns red litmus blue.
Question 2
1 / -0

The constituents of which of the following alloys are lead and tin?

A
Steel

B
Stainless steel

C
Bronze

D
Solder

Solution

Its constituents are lead and tin.
Question 3
1 / -0

Which of the following metals does not react with water or even with steam?

A
Sodium

B
Magnesium

C
Copper

D
Zinc

Solution

Copper is less electropositive than hydrogen and cannot displace it from its compounds like water to liberate hydrogen gas.
It reacts neither with water nor with steam.
Question 4
1 / -0

Which of the following metals have low densities?

a. Sodium
b. Iron
c. Potassium
d. Copper

A
Only a and b

B
Only a and c

C
Only b and c

D
Only a and d

Solution

This is the correct option. Sodium and potassium have low densities.
Question 5
1 / -0

Which of the following statements is/are false?

a. The acidic, non-metal oxides turn blue litmus red.
b. Sulphur and phosphorus are the non-metals that are used in fireworks.
c. Non-metals react with dilute acids.

A
Only a

B

Only a and b

C
Only b

D
Only c

Solution

This is the correct option as this statement is false. Non-metals do not react with dilute acids.
Question 6
1 / -0

Solution(s) of which of the following with water turn(s) red litmus blue?

a. Magnesium oxide
b. Sulphur dioxide
c. Sodium oxide
d. Carbon dioxide

A
Only a and b

B
Only b and c

C
Only a and c

D
Only b and d

Solution

This is the correct option. Solutions of magnesium oxide and sodium oxide with water turn red litmus blue. Both magnesium oxide and sodium oxide are basic oxides.
Question 7
1 / -0

Which of the following elements is/are present in 22K gold?

A
Copper and silver

B
Copper or silver

C
Copper or zinc

D
Brass or zinc

Solution

22K gold contains either copper or silver. It is 22 parts of pure gold alloyed with 2 parts of either copper or silver. Pure gold is very soft with a low yield point. Thus, it is mixed with either copper or silver to increase its strength.
Question 8
1 / -0

Riya's class teacher explained the physical properties of non-metals. According to her teacher, the non-metal that is in solid state and has lustre is

A
bromine

B
iodine

C
carbon

D
silicon

Solution

Iodine is the non-metal which is in solid state and has lustre.
Question 9
1 / -0

According to Sweta's class teacher, metals are good conductors of electricity and heat. She tells Sweta about a liquid metal that is used in thermometers to test body temperature. The name of that liquid metal is

A
sodium

B
mercury

C
potassium

D
calcium

Solution

Mercury is the liquid metal that is used in thermometers.
Question 10
1 / -0

Which of the following properties of aluminium makes it useful to make parts of airplanes?

A
Hard and high density

B
Hard and low density

C
Ductile and high density

D
Malleable and soft

Solution

Aluminium, when mixed with other metals, gives hard alloy with low density, which makes it suitable for making parts of airplanes.
Question 11
1 / -0

Read the following statements and choose the correct answer.

Statement I: Sulphur on reaction with oxygen forms sulphur dioxide, which dissolves in water to form sulphuric acid.
Statement II: Sulphur is a non-metal that forms an acidic oxide, which turns blue litmus red.

A
Statement I is correct and Statement II is incorrect.

B
Statement I is incorrect and Statement II is correct.

C
Both the statements are correct.

D
Both the statements are incorrect.

Solution

Statement I is incorrect because sulphur dioxide on treatment with water gives sulphurous acid and not sulphuric acid.
Sulphur dioxide (SO₂) + water (H₂O) → sulphurous acid (H₂SO₃)
Statement II is correct. Sulphur is a non-metal and forms acidic oxide, which turns blue litmus red.
Question 12
1 / -0

What are the constituents of stainless steel?

A
Iron and carbon

B
Iron, nickel and chromium

C
Iron and nickel

D
Iron and chromium

Solution

Stainless steel is an alloy of iron, nickel and chromium.

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Re-Attempt Weekly Quiz Competition

Materials Metals And Non-Metals Test - 3

Result

Materials Metals And Non-Metals Test - 3

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Rank

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SHARING IS CARING

Question 1

acidic oxides

carbon dioxide

Basic oxides

nitric oxide

Solution

Question 2

Steel

Stainless steel

Bronze

Solder

Solution

Question 3

Sodium

Magnesium

Copper

Zinc

Solution

Question 4

Only a and b

Only a and c

Only b and c

Only a and d

Solution

Question 5

Only a

Only a and b

Only b

Only c

Solution

Question 6

Only a and b

Only b and c

Only a and c

Only b and d

Solution

Question 7

Copper and silver

Copper or silver

Copper or zinc

Brass or zinc

Solution

Question 8

bromine

iodine

carbon

silicon

Solution

Question 9

sodium

mercury

potassium

calcium

Solution

Question 10

Hard and high density

Hard and low density

Ductile and high density

Malleable and soft

Solution

Question 11

Statement I is correct and Statement II is incorrect.

Statement I is incorrect and Statement II is correct.

Both the statements are correct.

Both the statements are incorrect.

Solution

Question 12

Iron and carbon

Iron, nickel and chromium

Iron and nickel

Iron and chromium

Solution