Granite mainly composed of quartz and felsper particles, is obtained from

Minimum required water cement ratio for a workable concrete, is

Dorry's testing machine is used for

With storage, strength of cement

Laterite is found in

Stainless steel contains

Cement is said to be of good quality if

The minimum compressive strength of 1st class bricks should be

The steel used in R.C.C. work is