Question

Which of the following metals have a granular structure?
1. Bronze and cast iron
2. Copper and aluminium
3. Tin and plastic
4. Lead and plastic

Answer 1

Correct Answer - Option 1 : Bronze and cast iron

Explanation:

• The structures which are formed by joining of fine particles of different sizes together called granular structure. 
• Granular material includes a large group of materials of a particular physical, chemical, and mechanical properties.
• Granular material can be characterized as a three-phase system composed of grains creating a skeleton and a liquid or gases which fill voids.
• Grain size may range from several meters to several microns.
• For example, concrete is a granular structure which is made from a combination of various sizes of particles such as fine aggregates, cement, and coarse aggregates. 
• In the metal class, Bronze and cast iron are comes under granular structure.