Question:easy

The main chemical constituent of clay is:

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Clay is mainly a hydrated aluminosilicate mineral called kaolinite.
Updated On: Jul 16, 2026
  • Silicon oxide
  • Aluminium borosilicate
  • Zeolites
  • Aluminium silicate
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The Correct Option is D

Solution and Explanation

Approach this by elimination based on known uses of each material.
  1. Clay used in pottery and bricks is chemically an aluminosilicate, that is, a compound of aluminium, silicon and oxygen with water of hydration.
  2. Silicon oxide alone is quartz sand, it lacks aluminium, so option A does not fit.
  3. Aluminium borosilicate is a synthetic glass composition used for heat resistant glassware, not a natural clay, so option B is out.
  4. Zeolites are a specific microporous aluminosilicate family used for softening water, they are a subgroup, not the general description of clay, so option C is also incorrect.
  5. That leaves option D, aluminium silicate, which correctly describes the main constituent of clay.
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