Engineering Materials
The charge of the blast furnace consists of

Calcined ore, coke and limestone all in equal parts
Calcined ore (1 part), coke (8 parts) and limestone (4 parts)
Calcined ore (8 parts), coke (4 parts) and limestone (1 part)
Calcined ore (4 parts), coke (1 part) and limestone (8 parts)

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Steel contains

Elements like phosphorus, sulphur and silicon in varying quantities
Alloying elements like chromium, tungsten nickel and copper
50% or more iron
80% or more iron

ANSWER DOWNLOAD EXAMIANS APP