Question

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

(i) Good thermal conductivity

(ii) Good electrical conductivity

(iii) Ductility

(iv) High melting point

• A. (i) and (ii)
• B. (i) and (iii)
• C. (ii) and (iii)
• D. (i) and (iv)

Answer 1

The correct option is D

(i) and (iv)

The explanation for the correct option :

• Aluminium $\left(\mathrm{Al}\right)$ is a ductile metal and it has a high melting point and good thermal conductivity.
• Metals like copper $\left(\mathrm{Cu}\right)$ and aluminium $\left(\mathrm{Al}\right)$ and alloys like steel are mostly used to make utensils.
• Due to their ability to conduct heat, copper and aluminium are the most common metals that are used as utensil materials.

The explanation for incorrect options :

Good electrical conductivity and ductility do not play any role in making utensils of aluminium.

Hence, the correct option is (D).