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Q: Argillaceous materials are those :
  • A. which have alumina as the main constituent
  • B. which have lime as the main constituent
  • C. which evolve heat on the addition of water
  • D. which easily break when hammered lightly
Correct Answer: Option A - Argillaceous materials consist of silicates of alumina in the form of clay, shale, slate and blast furnace slag. The rocks are hard and brittle e.g. slate, laterite.
A. Argillaceous materials consist of silicates of alumina in the form of clay, shale, slate and blast furnace slag. The rocks are hard and brittle e.g. slate, laterite.

Explanations:

Argillaceous materials consist of silicates of alumina in the form of clay, shale, slate and blast furnace slag. The rocks are hard and brittle e.g. slate, laterite.