The steel used for the manufacture of rails, is

Quick lime (or caustic lime)

Which of the following ingredients of the brick earth enables the brick to retain its shape?

Seasoning of timber is done

Priming consists of

Advantage of a clamp compared to a kiln for burning bricks is that

For a good building stone, its specific gravity should the greater than

Gypsum consists of

Wrought iron contains carbon upto