Which one of the following is acid resistant asbestos:

Quartzite, a metamorphic stone is

Pick up the correct statement from the following:

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

The cast iron when heated to red heat with powdered red haemetite in an oven for increasing its toughness, is converted …

Acrylic sheets

Stones used for rubble masonry must be

Pick up the correct statement from the following:

The most fire resistant paints are :