The defect caused by imperfect seasoning, is called

The thinner used for oil paints is

The solvent used in cement paints is

The alkaline salt present in the bricks, absorbs moisture from the air which on drying

The burning of bricks in kilns is complete within

The maximum water-cement ratio for durable concrete is

Efflorescence is caused if

The thickness of five-ply sheet varies from

The compressive strength of ordinary cement is less than its tensile strength.