Bitumen is generally obtained from

Basalt is

When a brick is immersed in water for 24 hours and then dried, if

Early attainment of strength in rapid hardening cement is mainly due to

Jhumb bricks are

The term frog means

The most commonly used base for timber painting, is

A volatile substance added to a paint to make its application easy and smooth, is known as

For the manufacture of plywood, veneers are placed so that grains of adjacent veneers