Question

Which among the following will show anisotropy?

• A. Quartz glass
• B. $NaBr$
• C. Starch
• D. Rubber

Answer 1

The correct option is B $NaBr$

Anisotropic is a property of solid by which they show variation of physical properties with directions.

Crystalline solids shows anisotropic property. This is due to the long range ordered arrangement in crystalline solids. Thus, there will be variation in physical property in different direction.

Amorphous solids shows isotropic property which can show same value for physical properties in all directions. These solids don’t show any long-range order and their arrangement is disordered. Thus, it gives same physical properties value in all directions.

NaBr is a crystalline solid so it shows anisotropic property.
Quartz glass, starch and rubber are amorphous solids so it shows isotropic property.