Chemistry
Grade-8
Easy
Question
Crystalline and _____ are the two major allotropes of carbon.
- Plastics
- Amorphous
- Rhombic
- Monoclinic
Hint:
Examples are : Diamond, graphite, graphene and fullerene, Coke and coal.
The correct answer is: Amorphous
The correct option is b)Amorphous.
Crystalline solids are formed by arranging their building blocks in a regularly repeating three-dimensional array (the crystal lattice), whereas amorphous solids are formed by arranging them more or less randomly. Crystalline solids have sharp melting points, well-defined edges and faces, and diffract X-rays.
Diamond, graphite, graphene and fullerene are crystalline allotropes of carbon. Coke and coal are the examples of amorphous allotropes of carbon.
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