Materials Metals and Non Metals Test

Result

Materials Metals and Non Metals Test - 13

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is NOT a heavy metal?

A
Cd

B
Hg

C
Pb

D
K

Solution

'K? is not a heavy metal. It is a light metal.
Question 2
1 / -0

Which of the following substances will prevent corrosion of metals?

A
Nitrogen

B
Hydrogen

C
Oxygen

D
Carbon

Solution

The supply of nitrogen to a corrosive metal will prevent its corrosion.
Question 3
1 / -0

Which of the following metals in their molten state cause galvanization of an iron article?

A
Zinc

B
Copper

C
Carbon

D
Gold

Solution

When an iron article is dipped in molten zinc, it is galvanized.
Question 4
1 / -0

Arrange the given metals in the descending order of their reactivity.

A
Aluminium, copper, potassium

B
Sodium, iron, copper

C
Silver, zinc, calcium

D
Magnesium, copper, sodium

Solution

The descending order of reactivity of metals is as follows: Na > Ca > Mg > Al > Zn > Fe > Sn > Pb[H]Cu > Hg > Ag > Au > Pt By using this, we can say that in the given options, only Na > Fe > Cu is the correct order.
Question 5
1 / -0

When a little aluminium powder is added to dilute sulphuric acid, the produces(s) formed in the reaction is

A
sulphur dioxide.

B
aluminium sulphate.

C
hydrogen.

D
Both (B) and (C)

Solution

In the reaction of aluminium powder with dil. H₂SO₄,the products formed are aluminium sulphate and hydrogen gas. 2Al + (dil.)3H₂SO₄ → Al₂(SO₄)³ + 3H₂
Question 6
1 / -0

Which of the following statements is true of the given chemical reactions?

(i) ZnO + C → Zn + CO

(ii) 2Fe₃O₃ + 3C → 6Fe + 3CO₂

A
Carbon is reduced.

B
Carbon is oxidized.

C
Metal oxide is reduced to metal.

D
Metal oxide is oxidized.

Solution

Metal oxides are reduced to metals.
Question 7
1 / -0

Why is gold mixed with copper?

A
To make gold soft

B
To make gold hard

C
To make gold more yellowish

D
To give gold a lustre

Solution

Gold is mixed with copper to make it hard.
Question 8
1 / -0

Which of the following statements is correct?

A
All metals are ductile.

B
All non-metals are ductile.

C
Generally, metals are ductile.

D
Some non-metals are ductile.

Solution

Generally, metals are ductile.
Question 9
1 / -0

Study the reaction given below.

X + YSO₄ → Y + XSO₄

What are X and T?

A
Al,Mg

B
Zn,Cu

C
Ag,K

D
H,Al

Solution

Zn + CuSO₄ → Cu + ZnSO₄. Hence, X is zinc and Y is copper.
Question 10
1 / -0

Which of the following is NOT a general property of metals?

A
Ductility

B
Malleability

C
Bad conductor of electricity

D
Sonorous nature

Solution

All metals are good conductors of electricity, whereas insulators are bad conductors of electricity.

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Re-Attempt Weekly Quiz Competition

Materials Metals and Non Metals Test - 13

Result

Materials Metals and Non Metals Test - 13

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SHARING IS CARING

Question 1

Cd

Hg

Pb

K

Solution

Question 2

Nitrogen

Hydrogen

Oxygen

Carbon

Solution

Question 3

Zinc

Copper

Carbon

Gold

Solution

Question 4

Aluminium, copper, potassium

Sodium, iron, copper

Silver, zinc, calcium

Magnesium, copper, sodium

Solution

Question 5

sulphur dioxide.

aluminium sulphate.

hydrogen.

Both (B) and (C)

Solution

Question 6

Carbon is reduced.

Carbon is oxidized.

Metal oxide is reduced to metal.

Metal oxide is oxidized.

Solution

Question 7

To make gold soft

To make gold hard

To make gold more yellowish

To give gold a lustre

Solution

Question 8

All metals are ductile.

All non-metals are ductile.

Generally, metals are ductile.

Some non-metals are ductile.

Solution

Question 9

Al,Mg

Zn,Cu

Ag,K

H,Al

Solution

Question 10

Ductility

Malleability

Bad conductor of electricity

Sonorous nature

Solution

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