A first class brick should have a minimum crushing strength of

The rocks formed due to solidification of molten mass laying below or above the earth surface, are called

Moorum is a decomposed laterite and has deep brown or red colour.

The defect caused by imperfect seasoning, is called

The initial setting of cement is caused due to

The shrinkage of concrete

The strength of cement concrete is directly proportional to cement-water ratio.

The greater the percentage of tri-calcium silicate in the cement, the better will be the cement.

The hydraulic lime which resembles very much with Portland cement in its chemical composition is called.