Metals and Non-metals Test

Result

Metals and Non-metals Test - 21

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following metals exist in their native state in nature?

(i) Cu

(ii) Au

(iii) Zn

(iv) Ag

A
(i) and (ii)

B
(ii) and (iii)

C
(ii) and (iv)

D
(iii) and (iv)

Solution

Gold and silver are noble metals and are the least reactive metals. Hence, they are found in their native state in nature.
Question 2
1 / -0

Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?

(i) Au

(ii) Cu

(iii) Na

(iv) K

A
(i) and (ii)

B
(i) and (iii)

C
(ii) and (iii)

D
(iii) and (iv)

Solution

These metals are at the top of reactivity series. Hence, these are refined by electrolytic refining.
Question 3
1 / -0

Silver articles become black on prolonged exposure to air. This is due to the formation of

A
\(Ag_3N\)

B
\(Ag_2O\)

C
\(Ag_2S\)

D
\(Ag_2S\, and\, Ag_3N\)
Question 4
1 / -0

Galvanisation is a method of protecting iron from rusting by coating with a thin layer of

A
Gallium

B
Aluminium

C
Zinc

D
Silver

Solution

Applying a layer of zinc through electrolysis is called galvanization.
Question 5
1 / -0

Stainless steel is very useful material for our life. In stainless steel, iron is mixed with

A
Ni and Cr

B
Cu and Cr

C
Ni and Cu

D
Cu and Au

Solution

Composition of steel: Iron, Nickel, Chromium.
Question 6
1 / -0

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of

A
\(CuSO_4\)

B
\(CuCO_3\)

C
\(Cu(NO_3)_2\)

D
\(CuO\)

Solution

When kept in open air, Copper reacts with oxygen to form copper oxide which appears as greenish layer.
Question 7
1 / -0

Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?

A
Na

B
Fe

C
Cr

D
Hg

Solution

Mercury is the metal which is present in liquid state at room temperature.
Question 8
1 / -0

Which of the following metals are obtained by electrolysis of their chlorides in molten state?

(i) Na

(ii) Ca

(iii) Fe

(iv) Cu

A
(i) and (iv)

B
(iii) and (iv)

C
(i) and (iii)

D
(i) and (ii)

Solution

These metals are at the top of reactivity series.
Question 9
1 / -0

Generally, non-metals are not lustrous. Which of the following non-metal is lustrous?

A
Sulphur

B
Oxygen

C
Nitrogen

D
Iodine
Question 10
1 / -0

Which one of the following four metals would be displaced from the solution of its salts by other three metals?

A
Mg

B
Ag

C
Zn

D
Cu

Solution

Silver is the least reactive metal among the given metals.

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Metals and Non-metals Test - 21

Result

Metals and Non-metals Test - 21

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SHARING IS CARING

Question 1

(i) and (ii)

(ii) and (iii)

(ii) and (iv)

(iii) and (iv)

Solution

Question 2

(i) and (ii)

(i) and (iii)

(ii) and (iii)

(iii) and (iv)

Solution

Question 3

\(Ag_3N\)

\(Ag_2O\)

\(Ag_2S\)

\(Ag_2S\, and\, Ag_3N\)

Question 4

Gallium

Aluminium

Zinc

Silver

Solution

Question 5

Ni and Cr

Cu and Cr

Ni and Cu

Cu and Au

Solution

Question 6

\(CuSO_4\)

\(CuCO_3\)

\(Cu(NO_3)_2\)

\(CuO\)

Solution

Question 7

Na

Fe

Cr

Hg

Solution

Question 8

(i) and (iv)

(iii) and (iv)

(i) and (iii)

(i) and (ii)

Solution

Question 9

Sulphur

Oxygen

Nitrogen

Iodine

Question 10

Mg

Ag

Zn

Cu

Solution

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