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

PVC stands for

The melting point of silica is :

The most important constituent of an oil paint, is

The minimum compressive strength of 1st class bricks should be

The slag which floats on the surface of the molten iron generally contains

Plastic

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

The weight of 1 m3 of brick earth, is about