Inner part of a timber log surrounding the pith, is called

The portion of the brick cut across its width and having its length equal to that of a full brick, is known as

The colour of statuary marble used for sculptor's work, is

Pick up the correct statement from the following:

Dry rot

The presence of sand in brick earth prevents:

Pick up the correct statement from the following:

Polymerization helps to improve the property of

Bitumen paints offer