MCQ Class 10 Science Metals and Non metals with Answers

CBSE Class 10 Science Chapter 3 Metals & Non-Metals Multiple Choice Questions with Answers. MCQ Class 10 Science Metals & Non-Metals with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 10 Science Metals & Non-Metals MCQs with Answers to know their preparation level.

Multiple Choice Questions - Set - 4

Question 1:

Which of the following pairs will give displacement reactions?

(a) NaCl solution and copper metal

(b) MgCl₂ solution and aluminium metal

(d) AgNO₃ solution and copper metal

Check Answer

Correct Answer – (D)

Copper (Cu) being more reactive than silver (Ag), displaces silver from silver nitrate (AgNO₃) to form copper nitrate

2AgNO₃+ Cu → Cu(NO₃)₂+ 2Ag

Question 2 :

Which of the following represent the correct order of decreasing reactivity?

a) Mg > Al > Zn > Fe

b) Mg > Zn > Al > Fe

c) Al > Zn > Fe > Mg

d) Mg > Fe > Zn > Al

Check Answer

Correct Answer – (A)

The decreasing order of the reactivity of the common metals is given below:

Li, K, Na, Ba, Ca, Mg , Al, Mn, Zn, Fe, Ni, Sn, Pb, [H], Cu,Hg, Ag, Au,Pt

Question 3 :

In electrolytic refining, the cathode is made up of

a) Pure metal

b) Impure metal

c) Alloy

d) Metallic salt

Check Answer

Correct Answer – (A)

In electrolytic refining of a metal, the cathode is made up of pure metal whereas the anode is made up of impure metal.

Question 4 :

The metal which is liquid at room temperature is

a) Bromine

b) Mercury

c) Iodine

d) Potassium

Check Answer

Correct Answer – (B)

Mercury is the only metal which exists as a liquid at room temperature.

Question 5 :

The number of protons in an atom of an element A is 19 then, the number of electron in its ion A⁺ is:

a) 18

b) 19

c) 20

d) 21

Check Answer

Correct Answer – (A)

Question 6 :

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

(a) Ca

(b) C

(d) Fe

Check Answer

Correct Answer – (A)

Calcium reacts with oxygen to give calcium oxide (CaO) which is having a high melting point and dissolves in water to form calcium hydroxide (Ca(OH)₂)along with the release of large amount of thermal energy.

Question 7 :

In the given reaction, Al₂O₃+ NaOH → ……X…… + H₂O

What is element X?

a) NaAlO₂

b) Na₃Al

c) Na₂O₃

d) NaAl₂O₃

Check Answer

Correct Answer – (A)

Aluminium oxide is amphoteric in nature, i.e., it reacts with acids as well as bases to form salt and water.

Here, aluminium oxide behaves as an acid as it reacts with NaOH, a base and forms sodium aluminate (NaAlO₂) and water:

Al₂O₃+ NaOH → 2NaAlO₂+ H₂O

Question 8 :

The sulphide ores are converted into oxides by heating strongly in the presence of excess air. This process is known as

a) Roasting

b) Smelting

c) Calcination

d) Refining

Check Answer

Correct Answer – (A)

The process of heating the sulphide ore strongly in the presence of air to convert it into metal oxide, is known as roasting.

Question 9 :

Bauxite is an ore of

a) Iron

b) Aluminium

c) Mercury

d) Copper

Check Answer

Correct Answer – (B)

Bauxite is a commercial ore of aluminium which consists largely of hydrated aluminium oxide, Al₂O₃.2H₂O.

Question 10 :

The non-metal which is liquid at room temperature is:

a) Mercury

b) Bromine

c) Carbon

d) Helium

Check Answer

Correct Answer – (B)

NCERT Solutions & Download NCERT Textbooks

Multiple Choice Questions – Chapter 2 – Acids, Bases and Salt

Multiple Choice Questions - Set - 4

Correct Answer – (D)

Correct Answer – (A)

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Correct Answer – (B)

Correct Answer – (A)

Correct Answer – (A)

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Correct Answer – (B)

Correct Answer – (B)

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