The colour of brick depends upon the amount of iron oxide present in the clay.

Related MCQs

• Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
• Portland cement manufactured from pure white chalk and clay, free from iron-oxide, known as
• The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
• Clay and silt content in a good brick earth must be at least
• The process of mixing clay, water and other ingredients to make brick is known as
• The percentage of silica in a good brick clay should vary from
• The percentage of alumina in a good brick clay should vary from
• The lime which contains more than 30% of clayey impurities in the form of silica, alumina and iron oxide, is known as
• Eminently hydraulic lime is one in which the percentage of silica, alumina and iron oxide is
• Excess of alumina in brick earth makes the brick