The commonly used lime in white washing, is

For slaking of 10 kg of CaO, the theoretical amount of water is

Percentage of silica in a good brick earth lies between

A mortar joint in masonry which is normal to the face of wall is known as

Cast steel is manufactured by

Good quality sand is never obtained from

Forge pig may be converted to wrought iron by

Paints with white lead base are suitable for painting of

The main ingredients of Portland cement are