Question

in which of the following property of expansion and contraction of metals
A. to fix handle on Iron utensils
B. to fix metal Rim on wooden wheel
C. joint in railway track
D. all of the above ​

Answer 1

Answer:

Option (D)

Explanation:

When a substance is heated, it becomes larger in size. This process, when an object expands on heating, is known as expansion. In general, all the metals expands on heating.

When a substance is cooled, it shrinks in size. This process, when an object contracts on cooling, is known as contraction.

In all the given options, when heat is applied (directly or indirectly) to a metal, it expands and when the temperature drops, the metal contracts.

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