Water paint is a

PVC stands for

Varnish is a transparent or semi-transparent solution of resinuous substances in

Quartzite, a metamorphic stone is

Polymerization helps to improve the property of

The most valuable timber may be obtained from

The weight of 1 m3 of brick earth, is about

The commonly used colour pigment in paints, is

Wrought iron is manufactured from pig iron by