Question

36. Aluminium is used for making transmission wires. Which of the following properties are responsible for the same?
(0)
Good thermal conductivity
(ii)
Good electrical conductivity
Ductility
(iv)
High melting point
w
(i) and (ii)
O (ii) and (iii)
(iii) and (iv)
(i) and (iv)

Answer 1

Answer:

option two and three are correct and options a and d are false

Answer 2

Answer:

D

Explanation:

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.

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