CBSE CLASS 10 SCIENCE

Metals and Non-metals Important Questions

Syllabus-aligned Metals and Non-metals questions with clear answers, explanations and application-focused practice for CBSE Class 10 Science.

Ionic compoundsReactivity series

Questions

Chapter

Metals and Non-metals

Resource

Important Questions

1Metals and Non-metalsconcept-check

Why does solid sodium chloride not conduct electricity, whereas molten sodium chloride does?

Answer

In the solid state, ions are fixed in position. In the molten state, ions are free to move and carry electric charge.

Solution

Electrical conduction requires mobile charged particles. Heating breaks the rigid ionic lattice, allowing $N a^{+}$ and $C l^{-}$ ions to move.

2Metals and Non-metalsapplication

Answer

A brown copper coating forms and the blue solution becomes green. $F e + C u S O_{4} \to F e S O_{4} + C u$ .

Solution

Iron is more reactive than copper, so it displaces copper from copper sulphate solution.

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CBSE CLASS 10 SCIENCE

Syllabus-aligned Metals and Non-metals questions with clear answers, explanations and application-focused practice for CBSE Class 10 Science.

Ionic compoundsReactivity series

Questions

Chapter

Metals and Non-metals

Resource

Important Questions

1Metals and Non-metalsconcept-check

Answer

In the solid state, ions are fixed in position. In the molten state, ions are free to move and carry electric charge.

Solution

Electrical conduction requires mobile charged particles. Heating breaks the rigid ionic lattice, allowing $N a^{+}$ and $C l^{-}$ ions to move.

2Metals and Non-metalsapplication

Answer

A brown copper coating forms and the blue solution becomes green. $F e + C u S O_{4} \to F e S O_{4} + C u$ .

Solution

Iron is more reactive than copper, so it displaces copper from copper sulphate solution.