Question

Why the brick is always be red in colour? ​

Answer 1

Answer:

The colour of clay bricks is affected by the chemical and mineral content of the raw material used, the firing temperature and the atmosphere of the kiln. Bricks can be pink, white, yellow or red in colour. The pink is due to a high iron content, the colour turns to various red hues on increasing the temperature.

Answer 2

Answer:

it is made up of red sand