Metals and Non-metals

What you'll learn

A clear Class 10 guide to metals and non-metals covering physical and chemical properties, the reactivity series, displacement, ionic bonding, extraction of metals and corrosion.

This chapter has

Metals and Non-metals — solved practice questions

8 Class 10 Science questions with step-by-step solutions. Attempt each, then reveal the answer.

1. Q1easy

   Which property allows metals to be beaten into thin sheets?

   • Amalleability
   • Bductility
   • Cconductivity
   • Dlustre
   Show answer & solution

   Correct answer: (A) malleability

   Malleability — the ability to be beaten into sheets — is a characteristic property of metals.

2. Q2easy

   Which property allows metals to be drawn into thin wires?

   • Amalleability
   • Bductility
   • Cbrittleness
   • Dsonority
   Show answer & solution

   Correct answer: (B) ductility

   Ductility — metals can be drawn into thin wires.

3. Q3easy

   The most abundant metal in the Earth's crust is:

   • Aaluminium
   • Biron
   • Csodium
   • Dcalcium
   Show answer & solution

   Correct answer: (A) aluminium

   Aluminium is the most abundant metal in the Earth's crust.

4. Q4easy

   Metals generally react with oxygen to form:

   • Ametallic oxides
   • Bmetallic hydroxides
   • Cacids
   • Dsalts
   Show answer & solution

   Correct answer: (A) metallic oxides

   Metals react with oxygen to form metallic oxides, which are generally basic.

5. Q5medium

   Iron reacts with dilute HCl to produce:

   • AFeCl₃ and O₂
   • BFeCl₂ and H₂
   • CFe₂O₃ and HCl
   • DFeO and H₂O
   Show answer & solution

   Correct answer: (B) FeCl₂ and H₂

   Fe + 2HCl → FeCl₂ + H₂↑. Iron displaces hydrogen from the acid, producing ferrous chloride and hydrogen gas.

6. Q6medium

   The process of depositing a thin layer of zinc on iron to prevent rusting is called:

   • Aelectroplating
   • Bgalvanisation
   • Calloying
   • Dtempering
   Show answer & solution

   Correct answer: (B) galvanisation

   Galvanisation protects iron from rusting by coating it with a layer of zinc.

7. Q7hard

   Thermite reaction uses aluminium powder reacting with:

   • ACuO
   • BFe₂O₃
   • CZnO
   • DMgO
   Show answer & solution

   Correct answer: (B) Fe₂O₃

   Thermite: 2Al + Fe₂O₃ → Al₂O₃ + 2Fe. Aluminium displaces iron from iron oxide, releasing enormous heat.

8. Q8medium

   The most reactive metal among the following is:

   • AMg
   • BCa
   • CK
   • DNa
   Show answer & solution

   Correct answer: (C) K

   In the reactivity series, potassium (K) is more reactive than sodium, calcium and magnesium.

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