Pick up the metal refractory from the following:

Pick up the correct statement from the following:

Pozzolana (or surkhi) is used in lime

The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner, are kno…

The kiln which may work throughout the year, is

Asbestos

Pick up the correct statement from the following:

Cement is said to be of good quality if

The initial setting time of hydraulic lime, is