The amorphous form of silica is:
p-Block Elements (Class 11) · Class 11 · JEE Main Previous Year Question
The amorphous form of silica is:
- a
quartz
- b✓
kieselguhr
- c
tridymite
- d
cristobalite
kieselguhr
Strategy: Identify the amorphous (non-crystalline) form of silica among the given options.
Step 1: Forms of Silica
- Quartz: Crystalline — well-defined lattice structure.
- Tridymite: High-temperature crystalline polymorph of .
- Cristobalite: Another crystalline polymorph of .
- Kieselguhr (Diatomite): Amorphous — formed from fossilised diatom shells, has a porous, non-crystalline structure. Used as a filtering agent and in dynamite manufacturing.
Step 2: Conclusion Kieselguhr is the amorphous form of silica. ✅
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