CBSE 2025 · Region 4 · Set 1 · Q28 · 3 marks
Design an activity to show that metals are good conductors of heat and have high melting points.
Marking-scheme solution
Activity:
Take an aluminum or copper wire and clamp it on a stand as shown in the diagram.
Fix a pin to the free end of the wire using wax.
Heat the wire with spirit lamp or burner near the place where it is clamped.
We will observe that the pin falls when the wax melts but wire does not melt.
It indicates that metals are good conductors of heat and have high melting points.
(diagram is not mandatory)
(diagram is not mandatory)Metals and Non-metalsPhysical Properties of Metals and Non-metalsApplyshort_answereasy
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.