Question

Take the aluminum wire and clamp this wire on the stand and fix the pin into the free end of the wire using wax. Heat the wire with burner when it is clamped. After that we will find out?

• A. Metal will melt on heating
• B. Wax does not melt
• C. Aluminum is good conductor of heat
• D. Aluminum oxide will be formed

Answer 1

The correct option is C

Aluminum is good conductor of heat

Explanation for correct answer

Metals are excellent electrical conductors. Metals are used to make electric cables as a result of this.

(C) Because heat is transferred through the metallic wire, this occurs.

Electrical conductivity: Aluminum and copper are the primary materials for constructing electrical cables due to their low cost. Silver or gold wires, on the other hand, are utilized in some electrical devices due to their better conductivity. The activity that follows demonstrates the electrical conductivity of metals.

Explanation for incorrect answer

(A) Metal will melt on heating, Aluminum is having high melting point so it will not melt.

(B) Wax generally melt at particular temperature.

(D) Aluminum oxide $\left({\mathrm{Al}}_2{\mathrm{O}}_3\right)$ is not formed it generally forms copper oxide $\left(\mathrm{CuO}\right)$.

Therefore the correct option is (C).