To give a brilliant finish, the type of varnish used, is

Veneering means

For melting one tonne of cast iron

Chlorite, a green colour mineral is mainly derived from the decomposition of

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

The main function of alumina in brick earth is

The minimum compressive strength of 1<sup>st</sup> class bricks should be

Which of the following cements contains maximum percentage of dicalcium silicate?

The main ingredients of Portland cement are