Question

In which of the following substance is rigidity property found
Ice
chalk
Naphtale ball
Sheets of aluminium

Answer 1

Hay mate
Here is your answer
Sheets of aluminium
I hope my answer help you.

Answer 2

We define rigidity as follows:

Rigidity is the ability of a material to resist the change of its shape by any physical means.

We have a list of substance given in the question .

We need to identify a substance that resists change in its shape.

We take a look at ice - ice easily melts when exposed to heat hence lacks rigidity property.

Sheets of aluminium - They are soft and can easily be made into shapes hence lack rigidity.

Naphthalene ball - This is an organic compound which also melts on heating hence lacks rigidity property.

Chalk-  Chalk cannot be molded into various shapes without crashing it hence it has rigidity properties.