The process of converting pig iron into wrought iron by stirring in the molten state is called as _____

Commonly used fluxing material used in the process of smelting is _______

The process of direct transmission of heat through a material is known as ______

Corrosion of ferrous metals is known as _______

According to Indian Standards, overall thermal transmittance of a wall should not be more than ______ kcal/m2 h deg C.

Smith’s test is used to find out ________

Which of the following qualities is not possessed by the filters in the air conditioning system?

In attrition test used to find the rate of wear of stones, wear should be equal to or less than _______ for good buildin…