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Q: To prevent bricks from defects such as shrinkage and warping, which major ingredient is added in the mix during its preparation?
  • A. Alumina
  • B. Ferric oxide
  • C. Lime
  • D. Silica
Correct Answer: Option D - Silica (SiO₂) : It Prevent cracking, shrinkage and warping and provide uniform shape to bricks. Alumina: It is major component of brick. It imparts plasticity so that it can be moulded in desire shape Ferric oxide: – It acts as a catalyst in the fusion of ingredients of brick and also provide colour to it. Lime:– It imparts strength to brick and if it is in excess loss of shape of bricks takes place.
D. Silica (SiO₂) : It Prevent cracking, shrinkage and warping and provide uniform shape to bricks. Alumina: It is major component of brick. It imparts plasticity so that it can be moulded in desire shape Ferric oxide: – It acts as a catalyst in the fusion of ingredients of brick and also provide colour to it. Lime:– It imparts strength to brick and if it is in excess loss of shape of bricks takes place.

Explanations:

Silica (SiO₂) : It Prevent cracking, shrinkage and warping and provide uniform shape to bricks. Alumina: It is major component of brick. It imparts plasticity so that it can be moulded in desire shape Ferric oxide: – It acts as a catalyst in the fusion of ingredients of brick and also provide colour to it. Lime:– It imparts strength to brick and if it is in excess loss of shape of bricks takes place.