Question

18. 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

ANSWER
The options (i) and (iv) are correct.

Aluminium is ductile and has high electrical conductivity and this property is not useful in the making of utensils.

Aluminium has good thermal conductivity and high melting point.

The commonly used metals in making utensils are copper, steel (alloy of iron) and aluminium.

Copper and aluminium are the most preferred due to their conduction of heat.

Hence the correct option is D.