The maximum water-cement ratio for durable concrete is

Eminently hydraulic lime is one in which the percentage of silica, alumina and iron oxide is

The thin radial fibres extending from the pith to the cambium layer is called medullary rays.

The strength of white cement is

Sprit varnish consists of

A good quality cement should have higher percentage of

The rate of hydration and hydrolysis of cement depends upon its

Which of the following statement is correct?

The average out-turn of first class bricks in kiln burning is