Pig iron made from heamatite ores free from sulphur, phosphorus and copper, is known as 

parallel rulling straight edge machine is used to draw  

The minimum compressive strength of first-class brick should be 

The information which cannot be included in the drawing is conveyed to the estimate through  

Find out how will the key figure (X) look like after rotation. 

Choose the alternative which is closely resembles the water-image of the given combination.

The bulk density of aggregates does not depend upon: 

If 1500 g of water is required to have a cement paste 1875 g of normal consistency, the percentage of water is,