Smelting is carried out in a _______

Which of the following is the lowest part of the blast furnace?

Which of the following is not a quality of a good thermal insulating material?

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

Basalt is an example of _____ rock.

In which type of casting, molten metal is poured into moulds which keep on rotating?

Which of the following types of filters used in the air conditioning system is made of cloth that is discarded on gettin…

Blasting powder is a mixture of _________