Question

Question 22

Chalk, iron nail, wood, aluminium, candle, cotton usually look different from each other. Give some properties by which we can prove that these materials are different.

Answer 1

We can differentiate these materials on the basis of lustre, hardness, softness, roughness or smoothness.

$\begin{array}{cc}\text{Material}& \text{Properties}\\ \text{Chalk}& \text{Rough on the surface,cannot be compressed}\\ \text{Iron nail}& \text{Shine (lustre),hard}\\ \text{Aluminium}& \text{Shine (lustre),hard}\\ \text{Wood}& \text{Hard to compress,dull appearance}\\ \text{Candle}& \text{Soft to compress}\\ \text{Cotton}& \text{Soft to compress}\end{array}$