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The correct sequence of the manufacturing process of fire bricks is ______.

  • A.Digging -> Tempering -> Weathering -> Unsoiling -> Blending
  • B.Unsoiling -> Digging -> Weathering -> Blending -> Tempering
  • C.Weathering -> Tempering -> Digging -> Blending -> Unsoiling
  • D.Tempering -> Weathering -> Digging -> Unsoiling -> Blending

Answer: B

The stages in making fire bricks are unsoiling (removing the top soil), digging the clay, weathering it in heaps for some months, blending the clay with other materials and finally tempering it with water to the right consistency before moulding. The sequence Unsoiling, Digging, Weathering, Blending, Tempering is therefore the right one. The others put tempering or digging before weathering, or blending after the clay has been tempered, which reverses the order of the process.

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